Mig Welding Wire AWS Classification ER70S-7 Material Carbon Steel Process MIG Welding (GMAW) Wire Diameter 0.045 in Tensile Strength (As Welded) 70 ksi (80 Percent Argon/20 Percent Carbon Dioxide) 82 ksi (98 Percent Argon/2 Percent Oxygen) Yield Strength (Minimum Required) 58 ksi Yield Strength (As Welded) 58 ksi (80 Percent Argon/20 Percent Carbon Dioxide) 68 ksi (98 Percent Argon/2 Percent Oxygen) Spool Type Plastic Spool Series ER70S-7 Weight 44 lb