LincolnĀ® Sure Arc ED030614 Carbon Steel Welding Wire, Diameter: 0.035 Inch, Package: 44 lb Spool, AWS Class: AWS ER70S-6, Copper-Coated, Welding Process: MIG (GMAW And SAW), Weld Metal Composition: <2% Manganese (Mn), 0.5% Copper Plated Coating, Applicable Materials: Structural Steel