Mig Welding Wire, AWS Classification ER4043, Material Aluminum, Process MIG Welding (GMAW), Wire Diameter 0.047 in, Tensile Strength (As Welded) 29 ksi, Yield Strength (Minimum Required) Not Rated, Yield Strength (As Welded) Not Specified, Spool Type Plastic Spool, Series ER4043, Weight 1 lb, For Material Type Aluminum to Aluminum