Oerlikon Inertrod 904L description: INERTROD 904L is a W 20 25 5 Cu L / ER385 type solid TIG welding rod depositing a 20Cr25Ni5Mo weld metal. Suitable for use mainly with Ar shielding gas. INERTROD 904L is used for the 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 toughness at low temperatures is excellent. Also used for welding 904L to ASTM 304 and 316. INERTROD 904L has a very good corrosion resistance to general, pitting and crevice corrosion as well as stress corrosion cracking. For special request INERTROD 904L is available with TUV approval. TIG rod for welding AISI 904L steels. Excellent inter-granular corrosion resistance.