Hobart stainless steel welding wire is an extra low carbon wire for the welding of type 304L, 321 and 347 stainless steels. U.S.A. Wire Material Stainless steel, Product Type Welding wire, Wire Size in. 030, Compatible With MIG welders, Welding Processes 304L, 321 and 347 stainless steels, Weight lbs. 2. Provides excellent notch toughness at very low temperature Deposits a maximum of 04 carbon in the weld metal to minimize formation of chromium carbides and consequent susceptibility to intergranular corrosion.