NC-39L

Welding Electrode NC-39L

PREMIARC

NC-39L welding electrode, E309L-16 – Multipurpose welding electrode for joining carbon steel to inox steel. Suitable for all positions with AC/DC polarity.

Classification

AWS A5.4 E309L-16

Product Description

The NC-39L (E309L-16) electrode is specially designed for welding carbon steel to stainless steel. With a low carbon content (0.030%), this electrode is ideal for buffer coating and capping applications.

Compatible with AC and DC polarity, and supports all welding positions. High-quality weld results with a composition of 22%Cr – 12%Ni.

Product Specifications

ParametersDescription
Product NameWelding Electrode NC-39L
BrandKOBELCO
Electrode TypeWelding Electrodes for Stainless Steel
Welding Electrode Size2.0mm, 2.6mm, 3.2mm, 4.0mm and 5.0mm
Weight Per Packaging20 Kg
AWS StandardAWS A5.4 E309L-16
Re-Drying Conditions150–200°C for 0.5–1 hour
Identification Color1st Yellow green, 2nd Blue white
PolarityAC, DCEP

General Characteristics

NC-39L, E309L-16

  • Designed for welding different metal joints (e.g., welding carbon steel to stainless steel)
  • Suitable for buffer layers in steel coating and sealing applications
  • This electrode can be used in both AC and DC polarities for all welding positions.
  • The deposited metal has a low carbon content, type 22%Cr – 12%Ni.
  • NC-39L offers a limited amount of carbon content, typically around 0.030%.

Mechanical Properties of Weld Metal

Mechanical properties of all metals being welded

ParametersTypical Value (AC)Guaranty
0.2% Yield Strength (YS)410 MPa
Tensile Strength (TS)560 MPaMin. 518 MPa
Elongation (EL) on 4D42%Min. 30%
Impact Value at 0°C (IV)67 J

Welding Positions

posisi pengelasan kawat las nc-39l

NC-39L can be used in various welding positions, ranging from flat to vertical-up and overhead.

  • Flat Position (1F)
  • Flat Position (1G)
  • Horizontal Position (2F)
  • Horizontal Position (2G)
  • Vertical Upward Position (3G Uphill)
  • Overhead Position (4G)

Welding Parameters (A)

Diameter (mm)1F, 1G, 2F, 2G3G Vertical Uplink, 4G
2.050–75 A45–65 A
2.675–95 A70–90 A
3.285–120 A80–115 A
4.0110–160 A90–140 A
5.0150–200 A

Chemical Composition of Weld Metal

Chemical composition of all welded metals (mass %)

ElementTypical Value (AC)Guaranteeᵃ
C0.04Max. 0.04
Si0.42Max. 1.00
Mn1.60.5–2.5
P0.03Max. 0.04
S<0.01Max. 0.03
Ni13.312.0–14.0
Cr23.822.0–25.0
Mo0.18Max. 0.75
Cu0.09Max. 0.75

Note: ᵃ The single value represents the maximum limit.

Packaging Data

Diameter (mm)Packaging DetailsCarton Size (mm)
2.0Length: 250 mm; 2 kg/pack; 20 kg/carton; 11 g/stick300W × 125H × 280L
2.6Length: 300 mm; 2 kg/pack; 20 kg/carton; 20 g/stick300W × 95H × 330L
3.2Length: 350 mm; 5 kg/pack; 20 kg/carton; 36 g/stick175W × 125H × 380L
4.0Length: 350 mm; 5 kg/pack; 20 kg/carton; 55 g/stick175W × 115H × 380L
5.0Length: 350 mm; 5 kg/pack; 20 kg/carton; 82 g/piece175W × 115H × 380L

Certification Approval

CertificationApproval
ABSMG (AWS A5.4 E309L-16)
LRSS/CMn m (Komposisi Kimia)
DNVVL309L, MG
BVUP (E309L-16)
NKKD309L

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 to avoid porosity.
  • The width of the back-and-forth movement 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.

Order NC-39L welding electrode now through the available contact services.

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ISO certificate

ISO 9001:2015

ISO 14001:2015

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