C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/126
C22C 38/50 (2006.01) C22C 38/22 (2006.01)
Patent
CA 1163471
1183 FERRITIC STAINLESS STEEL ABSTRACT OF THE DISCLOSURE A ferritic stainless steel characterized by superior crevice and intergranular corrosion resistance. The steel consists essentially of, by weight, up to 0.08% carbon, up to 0.06% nitrogen, from 25.00 to 35.00% chromium, from 3.60 to 5.60% molybdenum, up to 2.00% manganese, up to 2.00% nickel, up to 2.00% silicon, up to 0.5% aluminum, up to 2.00% of elements from the group consisting of titanium, zirconium and columbium, balance essentially iron. The sum of carbon plus nitrogen is in excess of 0.0275%. Titanium, zirconium and columbium, are in accordance with the following equation: %Ti/6 + %Zr/7 + %Cb/8 ? %C + %N
348952
Mccunn Thomas H.
Nichol Thomas J.
Allegheny Ludlum Corporation
George H. Riches And Associates
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