Stainless steel compositions for enhanced corrosion resistance

Details Stainless steel compositions for enhanced corrosion resistance Stainless steel compositions for enhanced corrosion resistance

C - Chemistry, Metallurgy

22

C

C22C 38/40 (2006.01) C22C 38/02 (2006.01) C22C 38/18 (2006.01) C22C 38/42 (2006.01) C22C 38/44 (2006.01)

Patent

CA 2249971

An improved stainless alloy has application in handling concentrated sulfuric acid. The alloy of the invention comprises 22 to 36% chromium, 15 to 25 % nickel, 4 to 8 % silicon and minor amounts of molybdenum, copper, and tungsten with the balance iron. The alloy offers superior corrosion resistance by comparison with the standard stainless steels over the range from 90% sulfuric acid into the oleum range. The alloy may be used in either cast or wrought form.

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