Mig Welding Wire AWS Classification ERCuAl-A2 Material Copper Process MIG Welding (GMAW) Wire Diameter 0.035 in Tensile Strength (As Welded) 60 ksi Yield Strength (Minimum Required) 43 ksi Yield Strength (As Welded) 43 ksi Spool Type Plastic Spool Series ERCuAl-A2 Weight 33 lb For Material Type Aluminum Bronze to Aluminum Bronze Aluminum Bronze to Cast Iron Aluminum Bronze to Copper Aluminum Bronze to Steel Cast Iron to Copper Cast Iron to Steel Copper to Steel