Low thermal expansion nickel-iron base alloy

Details Low thermal expansion nickel-iron base alloy Low thermal expansion nickel-iron base alloy

1979-01-26

1980-02-26

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123J, 75123K, 75124, 75134F, 428616, 428619, C22C 3808, C22C 3810

Patent

active

041904370

ABSTRACT:
A castable nickel-iron base alloy suitable for high temperature service and characterized by low thermal expansion and freedom from notch sensitivity and deleterious microshrinkage in castings. The alloy consists essentially of at least 16% nickel, at least 10% cobalt, up to 5% columbium, up to 3% tantalum, up to 2.5% titanium, up to 2% aluminum, 0.06% to 0.25% boron, up to 0.1% carbon, and the balance iron.

REFERENCES:
patent: 3157495 (1964-11-01), Elselstein et al.
patent: 3705827 (1972-12-01), Muzyka et al.
patent: 3900316 (1975-08-01), Jones
patent: 3902899 (1975-09-01), Sponseller
patent: 4006011 (1977-02-01), Muzyka et al.
patent: 4006012 (1977-02-01), Kindlimann
patent: 4012227 (1977-03-01), Jones et al.
patent: 4066447 (1978-01-01), Smith, Jr. et al.

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