Mig Welding Wire AWS Classification ERCuSi-A Material Copper Process MIG Welding (GMAW) Wire Diameter 0.035 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 33 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