AWS A5.18 ER70S-3 Welding Wire

ER70S-3 is a commonly used silicon and manganese deoxidized, copper coated steel argon arc solid MIG/TIG welding wire or rod, specified in AWS A5.18 for general purpose. This wire or electrode requires a shielding gas like 100% CO2 or Argon + 20% CO2 used in single or multiple pass applications with a yield strength range of 450-500Mpa. Similar to ER70S-2, it’s suitable for manual tungsten argon arc welding and repairing C-Mn steels pipe and plate materials like ASTM A36, A106, Gr.B/C, A285-C, A516 GR55, GR70 etc. in metal furniture, sheet metal, ornamental iron fabrication, auto frames and other industries

Welder metals is one of the leading manufacturers, suppliers, exporters, stockiest of steel  MIG/TIG welding wires, rods, electrodes and consumables. The low alloy carbon steel ER70S-3 wire or rod supplied by us are in strict accordance with AWS A5.18 and other equivalent standards.

ER70S-3 Welding Wire Specifications

Weld Process: MIG, TIG(GTAW)
Specifications ANSI/AWS A5.18 ER70S-3 ; ASME SFA-5.18 ER70S-3

GB ER50S-3
Available size 0.8mm, 1.00mm, 1.2mm, 1.6mm
Available shape Coil spools, straight rods

ER70S-3 Wire Chemical Composition

C Mn Si S P Ni Cr Mo V Cu
0.06 – 0.15 0.90 – 1.40 0.45 – 0.75 0.035 0.025 0.15 0.15 0.15 0.03 ≤0.5

Reference Current

Specification(mm)  Reference current(DC+) CO2 Gas flow(L/min)
0.8 50～100 15
1.0 50～220 15～20
1.2 80-350 15～25
1.6 170-550 20～25

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