Austenitic iron-nickel base alloy

Details Austenitic iron-nickel base alloy Austenitic iron-nickel base alloy

1974-04-18

1976-01-27

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

75124, 175125, 75128F, 75128G, 75128T, 75128W, 75128V, C22C 3844, C22C 3846, C22C 3850, C22C 3854

Patent

active

039350371

ABSTRACT:
An iron-nickel base alloy containing 0.10% Max. carbon, 2% Max. manganese, 1% Max. silicon, 13.5-16% chromium, 24-28% nickel, 1-1.75% molybdenum, 1.6-2.7% titanium, 0.7-1.2% columbium, 0.5% Max. vanadium, 0.35% Max. aluminum, 0.001-0.01% boron, and the balance iron plus incidental impurities having improved strength as compared to A-286 Alloy and capable of attaining at least about 180 ksi yield strength when cold worked as little as about 15% and precipitation hardened. The alloy is especially useful in making large massive parts such as retaining rings which are substantially fully austenitic and nonmagnetic for the rotor windings of very large electric generators.

REFERENCES:
patent: 3065067 (1962-11-01), Oggen
patent: 3212884 (1965-10-01), Soler et al.
patent: 3243287 (1966-03-01), Lillys et al.
patent: 3300347 (1967-01-01), Kasza et al.
patent: 3362813 (1968-01-01), Ziolkowski
patent: 3420660 (1969-01-01), Kawakata et al.
patent: 3795552 (1974-05-01), Kegerise et al.

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