Oerlikon Inertfil 904L description: INERTFIL 904L is used for welding of ASTM 316 or similar steels, when a ferrite-free weld metal is required. Mainly used in cryogenic and non-magnetic applications. The impact strength at low temperatures is excellent. Also used for welding 904L to ASTM 304 and 316. INERTFIL 904L has a very good corrosion resistance to general, pitting and crevice corrosion as well as stress corrosion cracking. For special request INERTFIL 904L is available with TUV approval. Solid wire for welding type AISI 904L stainless steels. Excellent resistance to corrosion in sulfur and chlorine mixes.