Lanthanum-modified high-temperature alloy

Details Lanthanum-modified high-temperature alloy Lanthanum-modified high-temperature alloy

1977-10-31

1978-11-21

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75128E, 75134F, C22C 3000

Patent

active

041264479

ABSTRACT:
A high-temperature steel of chromium, nickel and tungsten modified with a lanthanum addition and balanced compositionally to provide a combination of good oxidation resistance and high temperature strength; chromium is present within the range of 19 to 22%, nickel is present within the range of 30 to 45%, tungsten is present within the range of 1 to 4% and lanthanum is present within the range of 0.02 to 0.25% with the lanthanum addition providing the oxidation resistance and the combination of elements being balanced to achieve structural stability and thus high strength at elevated temperature.

REFERENCES:
patent: 2553330 (1951-05-01), Post et al.
patent: 3758294 (1973-09-01), Bellot et al.
patent: 3947266 (1976-03-01), Culling
patent: 4039330 (1977-08-01), Shaw
patent: 4063934 (1977-12-01), Thuillier et al.

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