Patent ID: 8262815

Claim:
High purity ferritic stainless steel with excellent corrosion resistance and workability containing, by mass %, C: 0.01% or less, Si: 0.01 to 0.20%, Mn: 0.01 to 0.30%, P: 0.04% or less, S: 0.01% or less, Cr: 13 to 22%, N: 0.001 to 0.020%, Ti: 0.05 to 0.35%, Al: 0.005 to 0.050%, Sn: 0.001 to 1%, and a balance of Fe and unavoidable impurities, the high purity ferritic stainless steel containing a passivation film, wherein Sn is concentrated at the passivation film and directly below the film.