Corrosion resistance of welds in type 304L stainless steel made with a nickel-copper-ruthenium welding consumable

摘要

Ni-Cu-Pd welding consumables have been recently developed for 300-series austenitic stainless steels such as Type 304L (SS304L) to reduce the amount of Cr(VI) in the welding fumes. In this study, a modified filler metal that replaces Pd with Ru was evaluated. Initial tests conducted on button-melted samples and bead-on-plate welds indicated that Ni-Cu-Ru exhibited good corrosion properties. Actual Ni-Cu-Ru arc welds made on SS304L were successfully produced and the corrosion performance was comparable to or better than that of Ni-Cu-Pd welds. These welds are a suitable replacement for welds made with standard 300-series welding consumables, such as SS308L.