1-LB .030" ALUMINUM MIG WELDING WIRE ER5356 aluminum MIG (GMAW) welding wire features 5 percent magnesium content and a bright finish. It flows freely at 1,180° F (637.8° C) and provides less "bird-nesting" on push-type MIG welders. Applications include diesel engine bases, truck frames, cargo tanks and gun mount bases. Light gray color coding on label.