Welding Electrode - ESAB OK 48.04

ESAB OK 48.04 is a basic low-hydrogen SMAW electrode designed for welding unalloyed and micro-alloyed carbon manganese steels. The electrode provides a stable arc, good weld pool control and weld metal with high strength and outstanding impact toughness, even at low temperatures.

It is recommended for structural applications with high mechanical requirements and difficult stress conditions. OK 48.04 can be used with both AC and DC current and performs well in all welding positions, especially vertical and overhead.

Technical data:

• Classification:
  - SFA/AWS A5.1: E7018
  - EN ISO 2560-A: E 42 4 B 32 H5
• Current type: AC, DC+ / DC−
• Diffusible hydrogen: < 5.0 ml/100 g
• Alloy type: Carbon Manganese
• Covering type: Basic
• Minimum AC OCV: 65 V

Mechanical properties (all-weld metal):

• Yield strength: approx. 480 MPa
• Tensile strength: approx. 560 MPa
• Elongation: approx. 28 %
• Impact toughness (Charpy V): 100 J at −40 °C

Weld metal composition (typical):

• C: 0.07 %
• Mn: 1.12 %
• Si: 0.35 %

Deposition data (2.5 x 350 mm):

• Current range: 75–110 A
• Arc voltage: 23 V
• Efficiency: 64 %
• Melting time per electrode (90 % of max current): approx. 59 sec
• Deposition rate (90 % of I max): 1.0 kg/h

Approvals:
ABS, BV, DNV‑GL, LR, PRS, CE (EN 13479), UKCA, VdTÜV
Approvals are based on manufacturing location.