Mig Welding Wire AWS Classification ERCuSi-A Material Copper Process MIG Welding (GMAW) Wire Diameter 0.03 in Tensile Strength (As Welded) 50 ksi Yield Strength (Minimum Required) Not Rated Yield Strength (As Welded) Not Specified Spool Type Plastic Spool Series ERCuSi-A Weight 11 lb For Material Type Brass to Cast Iron Brass to Steel Bronze to Cast Iron Bronze to Steel Cast Iron to Copper Copper to Steel Welding Current Designation AC DCEP