Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1982-06-08
1984-06-26
Rutledge, L. Dewayne
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75128Z, 75128T, 75128G, 428685, C22C 3840
Patent
active
044564830
ABSTRACT:
A ferritic stainless steel characterized by superior toughness both prior to and after welding, and by superior crevice and integranular 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, between 2.00 and 5.00% 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:
REFERENCES:
patent: 4155752 (1979-05-01), Oppenheim
patent: 4216013 (1980-08-01), Gemmel et al.
patent: 4255497 (1981-03-01), Bond et al.
Deverell Harry E.
McCunn Thomas H.
Allegheny Ludlum Steel Corporation
Rutledge L. Dewayne
Viccaro Patrick J.
Yee Debbie
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