Metal treatment – Compositions – Heat treating
Patent
1978-06-22
1980-09-30
Steiner, Arthur J.
Metal treatment
Compositions
Heat treating
75122, 75134F, C22C 3000
Patent
active
042253640
ABSTRACT:
A solid solution strengthened Ni-Cr-Fe alloy capable of retaining its strength at high temperatures and consisting essentially of 42 to 48% nickel, 11 to 13% chromium, 2.6 to 3.4% niobium, 0.2 to 1.2% silicon, 0.5 to 1.5% vanadium, 2.6 to 3.4% molybdenum, 0.1 to 0.3% aluminum, 0.1 to 0.3% titanium, 0.02 to 0.05% carbon, 0.002 to 0.015% boron, up to 0.06 zirconium, and the balance iron. After solution annealing at 1038.degree. C. for one hour, the alloy, when heated to a temperature of 650.degree. C., has a 2% yield strength of 307 MPa, an ultimate tensile strength of 513 MPa and a rupture strength of as high as 400 MPa after 100 hours.
REFERENCES:
patent: 2994605 (1961-08-01), Gill et al.
patent: 3705827 (1972-12-01), Muzyka et al.
Gibson Robert C.
Korenko Michael K.
Abeles Daniel C.
Constant Richard E.
Lupo R. V.
Steiner Arthur J.
The United States of America as represented by the United States
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