High tension 304 stainless steel wire Stainless steel wire is an iron alloy containing at least 10.5% chromium. Its properties are obtained by the formation of an invisible, adherent film of chromium oxide. Alloy 304 is a general purpose authenticate stainless steel wire a face-centered cubic structure. It is essentially non-magnetic in the annealed state and can be cold hardened. Its low carbon content gives it better corrosion resistance in welded structures than alloy 302.Stainless steel wire can be used in many industries.