{"id":10827,"date":"2026-08-12T11:19:07","date_gmt":"2026-08-12T04:19:07","guid":{"rendered":"https:\/\/www.intanpertiwi.co.id\/?p=10827"},"modified":"2026-08-12T11:19:07","modified_gmt":"2026-08-12T04:19:07","slug":"perbedaan-nc-39-dan-nc-39l","status":"publish","type":"post","link":"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/","title":{"rendered":"Differences Between NC-39 and NC-39L: Functions and Applications"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"10827\" class=\"elementor elementor-10827\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c5061d7 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"1c5061d7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bfcf58c elementor-widget elementor-widget-text-editor\" data-id=\"bfcf58c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd translation-block\">The main differences between NC-39 and NC-39L lie in their AWS classifications and the carbon content of the weld metal deposit. NC-39 has the AWS classification A5.4 E309-16, while NC-39L has the AWS classification A5.4 E309L-16. The letter \u201cL\u201d in NC-39L indicates that the product is a <em>low carbon<\/em> type.<\/p><p class=\"isSelectedEnd\">Both electrodes belong to the E309 family and can be considered for welding dissimilar metal joints, including jobs involving ferritic steel or transitions between carbon steel and stainless steel. However, selection should not be based solely on the similarity of the product names.<\/p><p class=\"isSelectedEnd\">The base material, filler material, low-carbon deposit requirements, operating environment, and the Welding Procedure Specification (WPS) must be reviewed before selecting the electrode to be used.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f630ffe e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"f630ffe\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff9c5e1 elementor-widget elementor-widget-heading\" data-id=\"ff9c5e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Content<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Jawaban_Singkat\" >Short Answer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Apa_Itu_Kawat_Las_NC-39\" >What Is NC-39 Welding Electrode?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Apa_Itu_Kawat_Las_NC-39L\" >What Is NC-39L Welding Electrode?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Persamaan_NC-39_dan_NC-39L\" >Similarities Between NC-39 and NC-39L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Perbedaan_NC-39_dan_NC-39L\" >Differences Between NC-39 and NC-39L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#1_Perbedaan_Klasifikasi_AWS\" >1. Differences in AWS Classifications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#2_Perbedaan_Kandungan_Karbon\" >2. Differences in Carbon Content<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#3_Perbedaan_Risiko_Sensitization\" >3. Differences in Risk Sensitization<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#4_Perbedaan_Penggunaan_dan_Aplikasi\" >4. Differences in Usage and Application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#5_Perbedaan_Pertimbangan_Pemilihan\" >5. Differences in Selection Criteria<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Tabel_Perbedaan_NC-39_dan_NC-39L\" >Comparison Table of NC-39 and NC-39L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Kapan_Sebaiknya_Menggunakan_NC-39\" >When Should NC-39 Be Used?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Kapan_Sebaiknya_Menggunakan_NC-39L\" >When is the best time to use the NC-39L?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Panduan_Memilih_NC-39_atau_NC-39L\" >Panduan Memilih NC-39 atau NC-39L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Kesalahan_yang_Perlu_Dihindari\" >Mistakes to Avoid<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Rekomendasi_Produk_NC-39_dan_NC-39L\" >Product Recommendations: NC-39 and NC-39L<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#Kesimpulan\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/perbedaan-nc-39-dan-nc-39l\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Jawaban_Singkat\"><\/span>Short Answer<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-381ca73 elementor-widget elementor-widget-text-editor\" data-id=\"381ca73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>NC-39 is an SMAW electrode classified as AWS A5.4 E309-16, while NC-39L is classified as AWS A5.4 E309L-16. The letter \u201cL\u201d indicates a low-carbon deposit. Both can be used for dissimilar metal joints, but NC-39L is more appropriate when the WPS or project specifications require an E309L deposit with a lower carbon content.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b01cf08 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"b01cf08\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-424f8f1 elementor-widget elementor-widget-heading\" data-id=\"424f8f1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Apa_Itu_Kawat_Las_NC-39\"><\/span>What Is NC-39 Welding Electrode?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cd7474 elementor-widget elementor-widget-text-editor\" data-id=\"4cd7474\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39 is a KOBELCO stainless steel welding electrode for the Shielded Metal Arc Welding (SMAW) process. This product is classified as AWS A5.4 E309-16 and is designed for dissimilar metal joints and as a root pass on ferritic steel.<\/p><p class=\"isSelectedEnd\">According to official KOBELCO data, the NC-39 can be used with either AC polarity or Direct Current Electrode Positive (DCEP). The recommended re-drying conditions are 150\u2013200\u00b0C for 0.5\u20131 hour.<\/p><p class=\"isSelectedEnd translation-block\">This electrode may be considered when the WPS specifies classification E309-16. Its use must still take into account the degree of mixing between the filler metal and the base material, or <em>dilution<\/em>, particularly in joints between stainless steel and carbon steel or low-alloy steel.<\/p><p class=\"translation-block\">Technical information and complete specifications can be found on the <a href=\"https:\/\/www.intanpertiwi.co.id\/en\/product\/nc-39\/\" target=\"_self\">KOBELCO NC-39 welding electrode<\/a> page.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4cf6cf5 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"4cf6cf5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e225ab2 elementor-widget elementor-widget-heading\" data-id=\"e225ab2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Apa_Itu_Kawat_Las_NC-39L\"><\/span>What Is NC-39L Welding Electrode?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33d6fcc elementor-widget elementor-widget-text-editor\" data-id=\"33d6fcc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd translation-block\">NC-39L is a stainless steel electrode for the Shielded Metal Arc Welding (SMAW) process, classified as AWS A5.4 E309L-16. The letter \u201cL\u201d in the E309L classification indicates <em>low carbon<\/em> characteristics, meaning the weld metal deposit has a lower carbon content limit than the standard E309 type.<\/p><p class=\"isSelectedEnd translation-block\">This electrode can be considered for welding dissimilar metal joints, such as carbon steel to stainless steel, as well as for use as a base coat or <em>buffer layer<\/em> on ferritic steel.<\/p><p class=\"isSelectedEnd translation-block\">Its use must still be adapted to the base material, joint design, degree of <em>dilution<\/em>, and the applicable Welding Procedure Specification (WPS).<\/p><p>The KOBELCO NC-39L can be used with both AC and DCEP polarity. To maintain the condition of the electrodes before use, it is recommended to re-dry them at a temperature of 150\u2013200\u00b0C for 0.5\u20131 hour.<\/p><p class=\"isSelectedEnd translation-block\">Complete product specifications are available on the <a href=\"https:\/\/www.intanpertiwi.co.id\/en\/product\/nc-39l\/\" target=\"_self\">KOBELCO NC-39L welding electrode<\/a> page.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-076c42d e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"076c42d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-85ed4b3 elementor-widget elementor-widget-heading\" data-id=\"85ed4b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Persamaan_NC-39_dan_NC-39L\"><\/span>Similarities Between NC-39 and NC-39L<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16eea38 elementor-widget elementor-widget-text-editor\" data-id=\"16eea38\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Although they have different classifications, the NC-39 and NC-39L share a number of key similarities:<\/p><ul data-spread=\"false\"><li>Including stainless steel electrodes from the E309 series.<\/li><li>Used in the SMAW welding process.<\/li><li>Connections made of different metals may be considered.<\/li><li>Can be used as a base coat on ferritic steel.<\/li><li>Supports AC and DCEP polarity.<\/li><li>It is recommended to re-dry at 150\u2013200\u00b0C for 0.5\u20131 hour.<\/li><li>Available for flat, horizontal, vertical-up, and overhead positions.<\/li><li>The selection must be based on the base material and the WPS.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3117db2 elementor-widget elementor-widget-text-editor\" data-id=\"3117db2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd translation-block\">KOBELCO specifies different metal joint functions and <em>underlaying<\/em> for ferritic steel in both the NC-39 and NC-39L. Therefore, the main distinction between the two products is not merely the type of joint, but the classification and carbon limits of the weld metal deposit.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4b2918b e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"4b2918b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a27bc40 elementor-widget elementor-widget-heading\" data-id=\"a27bc40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Perbedaan_NC-39_dan_NC-39L\"><\/span>Differences Between NC-39 and NC-39L<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-525cd7c elementor-widget elementor-widget-heading\" data-id=\"525cd7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"1_Perbedaan_Klasifikasi_AWS\"><\/span>1. Differences in AWS Classifications<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be87d0c elementor-widget elementor-widget-text-editor\" data-id=\"be87d0c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39 is classified as AWS A5.4 E309-16, while NC-39L is classified as AWS A5.4 E309L-16.<\/p><p class=\"isSelectedEnd\">The addition of the letter \u201cL\u201d to E309L indicates a low-carbon variant. This distinction is important to note because electrode classifications are typically specified in the WPS or project specifications.<\/p><p class=\"isSelectedEnd\">If the WPS specifies E309-16, the electrodes used must meet that classification. Conversely, if the document requires E309L-16, NC-39L is the product that meets that classification.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-02f1ec9 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"02f1ec9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1bde596 elementor-widget elementor-widget-heading\" data-id=\"1bde596\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"2_Perbedaan_Kandungan_Karbon\"><\/span>2. Differences in Carbon Content<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-06d202c elementor-widget elementor-widget-text-editor\" data-id=\"06d202c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">KOBELCO data shows that the typical carbon content of NC-39 ore is 0.07%, while that of NC-39L is 0.04% in tests using AC current. The maximum guaranteed carbon content for NC-39 is listed as 0.15%, while that for NC-39L is limited to a maximum of 0.04%.<\/p><p class=\"isSelectedEnd\">The lower maximum limit is the NC-39L\u2019s key technical feature. This allows for better control of the deposit composition when the job requires the E309L grade.<\/p><p class=\"isSelectedEnd translation-block\">Typical values are not figures that must always appear exactly the same in every welding result. The actual deposit composition can be influenced by <em>dilution<\/em>, electrode condition, welding parameters, base material, and the welder\u2019s technique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-149f96e e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"149f96e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e8320b elementor-widget elementor-widget-heading\" data-id=\"4e8320b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"3_Perbedaan_Risiko_Sensitization\"><\/span>3. Differences in Risk Sensitization<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a72698d elementor-widget elementor-widget-text-editor\" data-id=\"a72698d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">In austenitic stainless steel, certain thermal cycles can promote the formation of chromium carbides around grain boundaries. This process can reduce the available chromium content in the surrounding area and increase susceptibility to intergranular corrosion.<\/p><p class=\"isSelectedEnd\">In general, a lower carbon content helps reduce carbide precipitation caused by the heat input from welding. However, the use of low-carbon electrodes does not automatically guarantee a joint free from sensitization or intergranular corrosion.<\/p><p class=\"isSelectedEnd\">Joint performance is also influenced by:<\/p><ul data-spread=\"false\"><li>Base material grade.<\/li><li>Heat input.<\/li><li class=\"translation-block\">Interpass temperature or <em>interpass temperature<\/em>.<\/li><li>Number of weld passes.<\/li><li>Cooling rate.<\/li><li>Dilution ratio.<\/li><li>Operating environment.<\/li><li>Cleaning after welding.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-809ad6c elementor-widget elementor-widget-text-editor\" data-id=\"809ad6c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39L is more appropriate when carbon deposit control is part of the technical requirements. NC-39 may still be used if the E309-16 classification is consistent with the WPS and the job conditions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-765aa59 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"765aa59\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3884ec3 elementor-widget elementor-widget-heading\" data-id=\"3884ec3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"4_Perbedaan_Penggunaan_dan_Aplikasi\"><\/span>4. Differences in Usage and Application<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8847f92 elementor-widget elementor-widget-text-editor\" data-id=\"8847f92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Both NC-39 and NC-39L can be considered for welding dissimilar metal joints. Examples include joining stainless steel to carbon steel or using them as a base coat on ferritic steel.<\/p><p class=\"isSelectedEnd\">NC-39 is more suitable when the job requires a standard E309-16 deposit. NC-39L should be considered when the specifications call for E309L-16 or require a deposit with a lower carbon limit.<\/p><p class=\"isSelectedEnd translation-block\">When working with <em>buffer layers<\/em>, <em>cladding<\/em>, or transition layers, the selection of electrodes must take into account the final composition resulting from the mixing of the filler metal and the base material. Therefore, selecting based solely on the designations E309 or E309L is not sufficient.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5640b05 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"5640b05\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c81a228 elementor-widget elementor-widget-heading\" data-id=\"c81a228\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"5_Perbedaan_Pertimbangan_Pemilihan\"><\/span>5. Differences in Selection Criteria<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c41ceb9 elementor-widget elementor-widget-text-editor\" data-id=\"c41ceb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39L isn\u2019t necessarily the best choice for every application. The low-carbon variant offers advantages when the carbon content of the deposit is a factor in joint design or corrosion resistance.<\/p><p class=\"isSelectedEnd\">Conversely, the use of NC-39 may still be appropriate if the WPS specifies E309-16 and does not require a low-carbon filler.<\/p><p class=\"isSelectedEnd\">The final selection should take the following into account:<\/p><ul data-spread=\"false\"><li>Classification of electrodes in WPS.<\/li><li>Types and grades of base materials.<\/li><li>The materials to be joined.<\/li><li>Material thickness.<\/li><li>Joint operating environment.<\/li><li>Corrosion requirements.<\/li><li>Post-welding heat treatment.<\/li><li>Welding position.<\/li><li>Current parameters.<\/li><li>Inspection and certification requirements.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-33bbe02 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"33bbe02\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e82b9a4 elementor-widget elementor-widget-heading\" data-id=\"e82b9a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Tabel_Perbedaan_NC-39_dan_NC-39L\"><\/span>Comparison Table of NC-39 and NC-39L<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a163bdb elementor-widget elementor-widget-text-editor\" data-id=\"a163bdb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table><thead><tr><th>Aspect<\/th><th>NC-39<\/th><th>NC-39L<\/th><\/tr><\/thead><tbody><tr><td><strong>Classification<\/strong><\/td><td>AWS A5.4 E309-16<\/td><td>AWS A5.4 E309L-16<\/td><\/tr><tr><td><strong>Welding Process<\/strong><\/td><td>SMAW<\/td><td>SMAW<\/td><\/tr><tr><td><strong>Carbon character<\/strong><\/td><td>Standard E309 Type<\/td><td>Tipe E309 <em>low carbon<\/em><\/td><\/tr><tr><td><strong>Typical carbon deposits<\/strong><\/td><td>0,07%<\/td><td>0,04%<\/td><\/tr><tr><td><strong>Carbon credit cap<\/strong><\/td><td>Maximum 0.15%<\/td><td>Maximum 0.04%<\/td><\/tr><tr><td><strong>Polarity<\/strong><\/td><td>AC and DCEP<\/td><td>AC and DCEP<\/td><\/tr><tr><td><strong>Different metal joints<\/strong><\/td><td>In accordance with the material and WPS.<\/td><td>In accordance with the material and WPS.<\/td><\/tr><tr><td><strong>Ferritic steel base layer<\/strong><\/td><td>It is worth considering.<\/td><td>It is worth considering.<\/td><\/tr><tr><td><strong>Election Focus<\/strong><\/td><td>E309-16 classification requirements<\/td><td>E309L-16 classification requirements and low-carbon deposit<\/td><\/tr><tr><td><strong>Considerations for Sensitization<\/strong><\/td><td>Controlled through material selection and procedures.<\/td><td>Lower carbon helps reduce risk in relevant conditions.<\/td><\/tr><tr><td><strong>Final reference<\/strong><\/td><td>Datasheet, material, and WPS<\/td><td>Datasheet, material, and WPS<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-222a8f6 elementor-widget elementor-widget-text-editor\" data-id=\"222a8f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"translation-block\"><strong>Note:<\/strong> The carbon content is based on KOBELCO welding rod data. The actual values in the weld may be affected by dilution and welding process conditions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f8a4ee7 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"f8a4ee7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9dd9698 elementor-widget elementor-widget-heading\" data-id=\"9dd9698\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Kapan_Sebaiknya_Menggunakan_NC-39\"><\/span>When Should NC-39 Be Used?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f78412 elementor-widget elementor-widget-text-editor\" data-id=\"2f78412\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39 may be considered when:<\/p><ul data-spread=\"false\"><li>WPS requires AWS A5.4 E309-16.<\/li><li>An E309 electrode is required for joining dissimilar metals.<\/li><li>The work requires a base layer on ferritic steel.<\/li><li>Low-carbon type deposits are not required.<\/li><li>The base materials and operating conditions have been assessed as suitable.<\/li><li>Welding parameters are determined by the diameter and position used.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-523695d elementor-widget elementor-widget-text-editor\" data-id=\"523695d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Before use, assess potential dilution and the characteristics of the base materials. For critical joints, the composition of the final deposit should be evaluated by a welding engineer.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0910808 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"0910808\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-167e09c elementor-widget elementor-widget-heading\" data-id=\"167e09c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Kapan_Sebaiknya_Menggunakan_NC-39L\"><\/span>When is the best time to use the NC-39L?<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5190417 elementor-widget elementor-widget-text-editor\" data-id=\"5190417\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">NC-39L can be considered when:<\/p><ul data-spread=\"false\"><li>WPS requires AWS A5.4 E309L-16.<\/li><li>The job requires a low-carbon weld metal deposit.<\/li><li>The joint involves carbon steel and stainless steel conforming to the E309L classification.<\/li><li>The risk of sensitization needs to be controlled.<\/li><li class=\"translation-block\">A buffer layer is required before the subsequent coating.<\/li><li>The operating environment requires the control of corrosion resistance after welding.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1da3804 elementor-widget elementor-widget-text-editor\" data-id=\"1da3804\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The use of NC-39L does not eliminate the need to control heat input, interpass temperature, material cleanliness, and welding parameters.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-15a7ecb e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"15a7ecb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5b55806 elementor-widget elementor-widget-heading\" data-id=\"5b55806\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Panduan_Memilih_NC-39_atau_NC-39L\"><\/span>Panduan Memilih NC-39 atau NC-39L<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ae6347f elementor-widget elementor-widget-text-editor\" data-id=\"ae6347f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table><thead><tr><th>Condition or Need<\/th><th>Products to Consider<\/th><th>Notes<\/th><\/tr><\/thead><tbody><tr><td><strong>The WPS specifies E309-16.<\/strong><\/td><td>NC-39<\/td><td>Ensure compliance with the base material and welding procedures.<\/td><\/tr><tr><td><strong>The WPS specifies E309L-16.<\/strong><\/td><td>NC-39L<\/td><td>Suitable for low-carbon weld metal deposition requirements.<\/td><\/tr><tr><td><strong>Different metal joints<\/strong><\/td><td>NC-39 or NC-39L<\/td><td>Select based on electrode classification and mating material.<\/td><\/tr><tr><td><strong>Base layer on ferritic steel<\/strong><\/td><td>NC-39 or NC-39L<\/td><td class=\"translation-block\">Evaluate the dilution level and the requirements for the next layer.<\/td><\/tr><tr><td><strong>The risk of sensitization needs to be controlled<\/strong><\/td><td>The NC-39L can be considered.<\/td><td class=\"translation-block\">Heat input and welding procedures must still be controlled.<\/td><\/tr><tr><td><strong>Classification not yet determined<\/strong><\/td><td>Do not choose based solely on the product name.<\/td><td class=\"translation-block\">Check the WPS or consult a welding engineer.<\/td><\/tr><tr><td><strong>Critical applications or corrosive environments<\/strong><\/td><td>Adhering to project specifications<\/td><td>Review the materials, WPS, and operating conditions.<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fa19d42 elementor-widget elementor-widget-text-editor\" data-id=\"fa19d42\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">Practical steps before deciding on a product:<\/p><ul data-spread=\"false\"><li>Identify the base material grade.<\/li><li>Inspect the masonry materials.<\/li><li>Read the electrode classification in the WPS.<\/li><li>Determine whether a low-carbon deposit is required.<\/li><li>Check the requirements for post-weld heat treatment.<\/li><li>Evaluate the corrosive environment or operating temperature.<\/li><li>Use parameters appropriate for the diameter and position.<\/li><li>Ensure the electrodes are stored and dried according to recommendations.<\/li><li>Consult a welding engineer regarding critical connections.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f18d71 elementor-widget elementor-widget-text-editor\" data-id=\"5f18d71\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"translation-block\">Readers seeking a broader overview can consult the <a href=\"https:\/\/www.intanpertiwi.co.id\/en\/jenis-kawat-las\/kawat-las-stainless-steel\/\" target=\"_self\">guide to selecting stainless steel welding electrode<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2d53cb4 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"2d53cb4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6281f97 elementor-widget elementor-widget-heading\" data-id=\"6281f97\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Kesalahan_yang_Perlu_Dihindari\"><\/span>Mistakes to Avoid<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2d5aea elementor-widget elementor-widget-text-editor\" data-id=\"d2d5aea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>1. Selecting based on name similarity<\/strong><\/p><p class=\"isSelectedEnd\">NC-39 and NC-39L appear almost identical, but their classifications and carbon deposit limits differ. The product code must be matched with the WPS and material specifications.<\/p><p><strong>2. Regarding the letter \u201cL\u201d as merely a series code.<\/strong><\/p><p class=\"isSelectedEnd\">The letter \u201cL\u201d indicates a low-carbon characteristic. This distinction is directly related to carbon content limits and considerations regarding sensitization.<\/p><p><strong>3. Assuming the NC-39L is always better<\/strong><\/p><p class=\"isSelectedEnd\">NC-39L is more relevant when low-carbon deposits are required. For applications specifying E309-16, NC-39 remains a suitable choice.<\/p><p><strong>4. Ignoring masonry materials<\/strong><\/p><p class=\"isSelectedEnd\">Joining stainless steel to carbon steel results in a mixing of compositions. The selection of filler material must account for dilution to ensure the deposit structure does not become excessively hard or susceptible to cracking.<\/p><p><strong>5. Did not follow the WPS<\/strong><\/p><p class=\"isSelectedEnd\">Parameters that prove successful for one job are not necessarily suitable for other materials, thicknesses, or positions. Current, polarity, number of passes, and interpass temperature must comply with approved procedures.<\/p><p><strong>6. Using electrodes in damp conditions<\/strong><\/p><p class=\"isSelectedEnd\">KOBELCO recommends re-drying NC-39 and NC-39L at 150\u2013200\u00b0C for 0.5\u20131 hour. Storage and drying must comply with the datasheet and consumable control procedures.<\/p><p><strong>7. Neglecting surface cleanliness<\/strong><\/p><p class=\"isSelectedEnd\">Oil, paint, moisture, scale, and contamination from carbon steel tools can affect arc stability and deposit quality. Use special stainless steel cleaning tools if necessary.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-caaae97 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"caaae97\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-123fc17 elementor-widget elementor-widget-heading\" data-id=\"123fc17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Rekomendasi_Produk_NC-39_dan_NC-39L\"><\/span>Product Recommendations: NC-39 and NC-39L<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9391e3c elementor-widget elementor-widget-text-editor\" data-id=\"9391e3c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">For dissimilar metal joints requiring AWS A5.4 E309-16 classification, one electrode that can be considered is the KOBELCO NC-39.\u00a0<\/p><p class=\"isSelectedEnd\">This product is designed for dissimilar metal joints and buttering layers on ferritic steel. Selection must still be tailored to the base materials, welding procedure, and WPS.<\/p><p class=\"isSelectedEnd\">If the job requires AWS A5.4 E309L-16 or weld metal deposits with lower carbon limits, KOBELCO NC-39L may be considered.\u00a0<\/p><p class=\"isSelectedEnd\">This product is also relevant for joining carbon steel to stainless steel, as well as for buffer layer requirements specified in the procedure.<\/p><p class=\"isSelectedEnd\">The final compatibility of the two products must be confirmed through the official datasheet, base materials, joint design, operating conditions, and the project WPS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3c50942 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"3c50942\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7870c7c elementor-widget elementor-widget-heading\" data-id=\"7870c7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Kesimpulan\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-372f58f elementor-widget elementor-widget-text-editor\" data-id=\"372f58f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"isSelectedEnd\">The difference between NC-39 and NC-39L lies in their AWS classification and the carbon content of the weld metal deposit. NC-39 is classified as AWS A5.4 E309-16, whereas NC-39L is classified as AWS A5.4 E309L-16 and features a lower carbon limit.<\/p><p class=\"isSelectedEnd\">NC-39 can be used when the job requires the standard E309-16 classification. NC-39L is more appropriate when the WPS specifies E309L-16, a low-carbon deposit, or the control of sensitization risks. However, the low-carbon nature does not eliminate the need to control heat input, dilution, cleanliness, and welding parameters.<\/p><p class=\"translation-block\"><a href=\"https:\/\/www.intanpertiwi.co.id\/en\/\" target=\"_self\">PT Intan Pertiwi Industri<\/a> supplies KOBELCO NC-39 and NC-39L for stainless steel welding and dissimilar metal joining applications.<\/p><p>Consult on the material type, work conditions, and WPS requirements to ensure the selected electrode meets project needs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-930c692 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"930c692\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d12a6d4 elementor-widget elementor-widget-image\" data-id=\"d12a6d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/wa.me\/628111438833\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"166\" src=\"https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-1024x213.webp\" class=\"attachment-large size-large wp-image-8212\" alt=\"hubungi kami sekarang untuk pemesanan kawat las\" srcset=\"https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-1024x213.webp 1024w, https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-300x63.webp 300w, https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-768x160.webp 768w, https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-18x4.webp 18w, https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las-600x125.webp 600w, https:\/\/www.intanpertiwi.co.id\/wp-content\/uploads\/2025\/10\/hubungi-kami-sekarang-untuk-pemesanan-kawat-las.webp 1200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7e4dca43 e-flex e-con-boxed wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-id=\"7e4dca43\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-232c27d elementor-widget elementor-widget-heading\" data-id=\"232c27d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ed4c5e6 elementor-widget elementor-widget-n-accordion\" data-id=\"2ed4c5e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordions. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7850\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-7850\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What are the main differences between the NC-39 and the NC-39L? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7850\" class=\"elementor-element elementor-element-40e0f258 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"40e0f258\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4b618f1b elementor-widget elementor-widget-text-editor\" data-id=\"4b618f1b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>NC-39 is classified as AWS A5.4 E309-16, whereas NC-39L is classified as AWS A5.4 E309L-16. The primary difference lies in the carbon content of the deposit. NC-39L has a lower carbon limit, making it more suitable when the WPS or project specifications require a low-carbon electrode.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7851\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7851\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> What does the letter L in NC-39L stand for? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7851\" class=\"elementor-element elementor-element-3b6e51ed e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"3b6e51ed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1ed0554e elementor-widget elementor-widget-text-editor\" data-id=\"1ed0554e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The letter \"L\" stands for \"low carbon.\" For NC-39L, the guaranteed maximum carbon content is 0.04%. Lower carbon content helps reduce chromium carbide formation and the risk of sensitization under relevant conditions, but it does not guarantee a completely corrosion-free joint.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7852\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7852\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Is NC-39L always better than NC-39? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7852\" class=\"elementor-element elementor-element-f499273 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"f499273\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5370b30 elementor-widget elementor-widget-text-editor\" data-id=\"5370b30\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>No. NC-39L is more suitable when the job requires E309L-16 or a low-carbon deposit. NC-39 remains appropriate when the WPS specifies E309-16. The selection should be based on classification, base material, operating environment, joint design, and project technical requirements.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7853\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7853\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Can NC-39 and NC-39L be used to join carbon steel with stainless steel? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7853\" class=\"elementor-element elementor-element-6eb8f5c1 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6eb8f5c1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7ec82437 elementor-widget elementor-widget-text-editor\" data-id=\"7ec82437\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Both are designed for dissimilar metal joints and buffer layers on ferritic steel. However, their use for joining carbon steel to stainless steel must be adapted to the material grades, dilution, heat treatment, operating conditions, and the approved WPS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-7854\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"5\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-7854\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> How do you choose between the NC-39 and the NC-39L? <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-7854\" class=\"elementor-element elementor-element-6fdebde3 e-con-full e-flex wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-id=\"6fdebde3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6530f580 elementor-widget elementor-widget-text-editor\" data-id=\"6530f580\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>First, check the electrode classification specified in the WPS. Use NC-39 if E309-16 is required, and NC-39L if E309L-16 or a low-carbon deposit is needed. Factors such as the base material, corrosive environment, heat treatment, welding position, and current parameters must also be taken into account.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Perbedaan NC-39 dan NC-39L terutama terletak pada klasifikasi AWS dan kandungan karbon deposit logam las. NC-39 memiliki klasifikasi AWS A5.4 E309-16, sedangkan NC-39L memiliki klasifikasi AWS A5.4 E309L-16. Huruf \u201cL\u201d pada NC-39L menunjukkan bahwa produk tersebut merupakan tipe low carbon atau rendah karbon. Kedua elektroda termasuk keluarga E309 dan dapat dipertimbangkan untuk pengelasan sambungan logam berbeda, termasuk pekerjaan yang melibatkan baja feritik atau transisi antara baja karbon dan stainless steel. Namun, pemilihannya tidak cukup hanya berdasarkan kemiripan nama produk. Material dasar, material pasangan, kebutuhan deposit rendah karbon, lingkungan operasi, serta Welding Procedure Specification atau WPS perlu diperiksa sebelum menentukan elektroda yang digunakan. Jawaban Singkat NC-39 adalah elektroda SMAW dengan klasifikasi AWS A5.4 E309-16, sedangkan NC-39L memiliki klasifikasi AWS A5.4 E309L-16. Huruf \u201cL\u201d menunjukkan deposit rendah karbon. Keduanya dapat digunakan untuk sambungan logam berbeda, tetapi NC-39L lebih relevan ketika WPS atau spesifikasi proyek mensyaratkan deposit E309L dengan kandungan karbon lebih rendah. Apa Itu Kawat Las NC-39? NC-39 merupakan elektroda las stainless steel KOBELCO untuk proses Shielded Metal Arc Welding atau SMAW. Produk ini memiliki klasifikasi AWS A5.4 E309-16 dan dirancang untuk sambungan logam berbeda serta sebagai lapisan dasar pada baja feritik. Berdasarkan data resmi KOBELCO, NC-39 dapat digunakan dengan polaritas AC maupun Direct Current Electrode Positive atau DCEP. Kondisi pengeringan ulang yang direkomendasikan adalah 150\u2013200\u00b0C selama 0,5\u20131 jam. Elektroda ini dapat dipertimbangkan ketika WPS mensyaratkan klasifikasi E309-16. Penggunaannya tetap harus memperhitungkan tingkat pencampuran antara logam pengisi dan material dasar atau dilution, terutama pada sambungan stainless steel dengan baja karbon maupun baja paduan rendah. Informasi teknis dan spesifikasi lengkap dapat dilihat pada halaman kawat las KOBELCO NC-39. Apa Itu Kawat Las NC-39L? NC-39L merupakan elektroda stainless steel untuk proses Shielded Metal Arc Welding (SMAW) dengan klasifikasi AWS A5.4 E309L-16. Huruf \u201cL\u201d pada klasifikasi E309L menunjukkan karakter low carbon, yaitu deposit logam las dengan batas kandungan karbon yang lebih rendah dibandingkan tipe E309 standar. Elektroda ini dapat dipertimbangkan untuk pengelasan sambungan logam berbeda, seperti sambungan baja karbon dengan stainless steel, serta sebagai lapisan dasar atau buffer layer pada baja feritik. Penggunaannya tetap perlu disesuaikan dengan material dasar, desain sambungan, tingkat dilution, dan Welding Procedure Specification (WPS) yang berlaku. KOBELCO NC-39L dapat digunakan dengan polaritas AC maupun DCEP. Untuk menjaga kondisi elektroda sebelum digunakan, rekomendasi pengeringan ulang adalah pada suhu 150\u2013200\u00b0C selama 0,5\u20131 jam. Spesifikasi lengkap produk tersedia pada halaman kawat las KOBELCO NC-39L. Persamaan NC-39 dan NC-39L Meskipun memiliki klasifikasi berbeda, NC-39 dan NC-39L mempunyai sejumlah persamaan utama: Termasuk elektroda stainless steel keluarga E309. Digunakan melalui proses pengelasan SMAW. Dapat dipertimbangkan untuk sambungan logam berbeda. Dapat digunakan sebagai lapisan dasar pada baja feritik. Mendukung penggunaan polaritas AC dan DCEP. Memiliki rekomendasi pengeringan ulang 150\u2013200\u00b0C selama 0,5\u20131 jam. Tersedia untuk posisi datar, horizontal, vertikal naik, dan atas kepala. Pemilihannya harus disesuaikan dengan material dasar dan WPS. KOBELCO mencantumkan fungsi sambungan logam berbeda dan underlaying pada baja feritik untuk NC-39 maupun NC-39L. Karena itu, pembeda utama kedua produk bukan sekadar jenis sambungannya, tetapi klasifikasi serta batas karbon deposit logam lasnya. Perbedaan NC-39 dan NC-39L 1. Perbedaan Klasifikasi AWS NC-39 mempunyai klasifikasi AWS A5.4 E309-16, sedangkan NC-39L diklasifikasikan sebagai AWS A5.4 E309L-16. Penambahan huruf \u201cL\u201d pada E309L menunjukkan varian rendah karbon. Perbedaan tersebut perlu diperhatikan karena klasifikasi elektroda biasanya telah ditentukan dalam WPS atau spesifikasi proyek. Apabila WPS mencantumkan E309-16, elektroda yang digunakan harus memenuhi klasifikasi tersebut. Sebaliknya, apabila dokumen mensyaratkan E309L-16, NC-39L menjadi produk yang sesuai secara klasifikasi. 2. Perbedaan Kandungan Karbon Data KOBELCO menunjukkan nilai karbon tipikal deposit NC-39 sebesar 0,07%, sedangkan NC-39L sebesar 0,04% pada pengujian menggunakan arus AC. Nilai jaminan maksimum karbon untuk NC-39 tercantum sebesar 0,15%, sementara NC-39L dibatasi maksimum 0,04%. Batas maksimum yang lebih rendah menjadi karakter teknis utama NC-39L. Hal tersebut membuat komposisi depositnya lebih terkontrol ketika pekerjaan mensyaratkan tipe E309L. Nilai tipikal bukanlah angka yang harus selalu muncul secara identik pada setiap hasil pengelasan. Komposisi deposit aktual dapat dipengaruhi oleh dilution, kondisi elektroda, parameter pengelasan, material dasar, dan teknik welder. 3. Perbedaan Risiko Sensitization Pada stainless steel austenitik, siklus panas tertentu dapat mendorong pembentukan karbida kromium di sekitar batas butir. Proses tersebut dapat mengurangi kandungan kromium yang tersedia di area sekitarnya dan meningkatkan kerentanan terhadap korosi intergranular. Secara umum, kandungan karbon yang lebih rendah membantu mengurangi presipitasi karbida akibat masukan panas pengelasan. Namun, penggunaan elektroda low carbon tidak otomatis menjamin sambungan bebas dari sensitization atau korosi intergranular. Performa sambungan juga dipengaruhi oleh: Grade material dasar. Heat input. Temperatur antarjalur atau interpass temperature. Jumlah jalur pengelasan. Kecepatan pendinginan. Tingkat dilution. Lingkungan operasi. Pembersihan setelah pengelasan. NC-39L lebih relevan apabila pengendalian karbon deposit menjadi bagian dari persyaratan teknis. NC-39 tetap dapat digunakan apabila klasifikasi E309-16 sudah sesuai dengan WPS dan kondisi pekerjaan. 4. Perbedaan Penggunaan dan Aplikasi NC-39 dan NC-39L sama-sama dapat dipertimbangkan untuk pengelasan sambungan logam berbeda. Contohnya adalah pekerjaan yang menghubungkan stainless steel dengan baja karbon atau penggunaan sebagai lapisan dasar pada baja feritik. NC-39 lebih sesuai ketika pekerjaan mensyaratkan deposit E309-16 standar. NC-39L lebih tepat dipertimbangkan ketika spesifikasi menetapkan E309L-16 atau membutuhkan deposit dengan batas karbon yang lebih rendah. Pada pekerjaan buffer layer, cladding, atau lapisan transisi, pemilihan elektroda perlu memperhitungkan komposisi akhir setelah terjadi pencampuran antara logam pengisi dan material dasar. Karena itu, pemilihan berdasarkan nama E309 atau E309L saja belum cukup. 5. Perbedaan Pertimbangan Pemilihan NC-39L tidak otomatis lebih baik untuk seluruh pekerjaan. Varian low carbon memberikan manfaat ketika kandungan karbon deposit memang menjadi pertimbangan dalam desain sambungan atau ketahanan korosinya. Sebaliknya, penggunaan NC-39 dapat tetap sesuai apabila WPS menetapkan E309-16 dan tidak mensyaratkan deposit tipe low carbon. Pemilihan akhir perlu mempertimbangkan: Klasifikasi elektroda pada WPS. Jenis dan grade material dasar. Material yang akan disambungkan. Ketebalan material. Lingkungan operasi sambungan. Persyaratan korosi. Perlakuan panas setelah pengelasan. Posisi pengelasan. Parameter arus. Persyaratan inspeksi dan sertifikasi. Tabel Perbedaan NC-39 dan NC-39L Aspek NC-39 NC-39L Klasifikasi AWS AWS A5.4 E309-16 AWS A5.4 E309L-16 Proses pengelasan SMAW SMAW Karakter karbon Tipe E309 standar Tipe E309 low carbon Karbon tipikal deposit 0,07% 0,04% Batas jaminan karbon Maksimum 0,15% Maksimum 0,04% Polaritas AC dan DCEP AC dan DCEP Sambungan logam<\/p>","protected":false},"author":1,"featured_media":10878,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","footnotes":""},"categories":[43],"tags":[],"class_list":["post-10827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-jenis-kawat-las"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Perbedaan NC-39 dan NC-39L: Fungsi dan Aplikasinya - PT. 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