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- Apr 19, 1999
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The technical reason given for 300 series Stainless Steel's resistance to oxidation is that it rapidly forms a thin (monomolecular layer) of oxide on the surface that is not thick enough to affect appearance but is thick enough to impede further oxidation. Apparently even mirror finished stainless has the oxide film present.
This oxide film impedes proper welding, I am told, and that is why sucessful stainless forge welding requires a sealed enviroment (canister or foil) or an inert gas environment.
Maybe 400 series without nickle in it behaves differently.
This oxide film impedes proper welding, I am told, and that is why sucessful stainless forge welding requires a sealed enviroment (canister or foil) or an inert gas environment.
Maybe 400 series without nickle in it behaves differently.