NC-39

Welding Electrode NC-39

PREMIARC

Welding Electrode NC-39, E309-16 is a high-quality welding electrode with calcium-titanium flux, ideal for welding a wide range of metals. Available for all welding positions with superior precision and crack resistance.

Classification

AWS A5.4 E309-16

Product Description

KOBE Steel NC-39 KOBELCO, E309-16 welding electrode is a multi-purpose welding electrode with calcium-titanium flux for welding ferritic steels and dissimilar metal joints.

Suitable for use on AC or DC-EP in all positions, producing high-quality welds with excellent crack resistance.

Product Specifications

ParametersDescription
Product NameWelding Electrode NC-39
BrandKOBELCO
Electrode TypeWelding Electrodes for Stainless Steel
Welding Electrode Size2.6 mm, 3.2 mm, 4.0 mm
Welding ProcessSMAW
Weight Per Packaging20 Kg
PolarityAC, DCEP
AWS StandardAWS A5.4 E309-16

Work Ability

  • KOBE Steel NC-39 is a welding electrode with calcium-titanium flux, providing structured welded joints.
  • NC-39 welding electrode is suitable for welding dissimilar metal joints and as a base for ferritic steel. This electrode can be used in both AC and DC-EP (positive) polarities for all welding positions.
  • Provides good weldability and superior crack resistance.

Welding Size and Current

Recommended Production Size and Welding Current

Electrode Diameter (mm)2.63.24.0
Electrode Length (mm)300350350
Current Range (Amp)
Flat position75 ~ 95A85 ~ 120A110 ~ 160A
Vertical & overhead75 ~ 95A85 ~ 120A90 ~ 140A

Welding Capability

Mechanical properties of all metals being welded

Product0.2% OS (MPa)TS (MPa)EL (%)IV (J)
NC-39
Example410590390°C: 62
Guaranty≥ 550≥ 30

Chemical Properties

Chemical composition of all welded metals (mass %)

ProductCSiMnPSNiCrMo
NC-39
Example0.070.401.00.03<0.0113.423.90.21
Guaranty≤ 0.15≤ 0.900.5 ~ 2.5≤ 0.04≤ 0.0312.0 ~ 14.022.0 ~ 25.0~

Notes of Usages

  • Re-dry the electrodes at a temperature of 150°C – 200°C for 30–60 minutes before use.
  • Keep the arc length shorter to create sufficient protection for the weld pool, thereby preventing porosity.
  • The width of the movement (weaving) must be 2.5 times smaller than the diameter of the electrode to obtain adequate protection.
  • Use the recommended welding parameters to prevent the electrode from burning due to Joule heating.
  • No preheating is required for welding stainless steel, but the interlayer temperature must be maintained at 150°C.

Want to order KOBELCO NC-39 Welding Electrode? Contact our team now.

ISO certificate

ISO 9001:2015

ISO 14001:2015

© 2025, PT. Intan Pertiwi Industri | All Rights Reserved.

Social Sticky