High temperature bushing alloy

Details High temperature bushing alloy High temperature bushing alloy

1986-07-18

1987-12-08

Rutledge, L. Dewayne

Metal treatment

Stock

Ferrous

148336, 420 12, 420 42, 420 65, 420 69, C22C 3848

Patent

active

047116773

ABSTRACT:
A cast austenitic stainless steel bushing for relatively high temperature turbocharger and automotive applications is provided having good hot hardness and hot strength properties and a co-effficient of thermal expansion approximating that of the parent housing alloy. Bushings made of this alloy have a composition in the range of 29-32% chromium; 4-8% nickel, 1.0-1.5% columbium and tantalum; 1.3-1.7% carbon, 0.25-0.45% sulfur, 0.3-0.4% nitrogen, up to 1.0% manganese, up to 1.0% silicon, up to 1.0% molybdenum, up to 0.1% phosphorous, balance iron.

REFERENCES:
patent: 3969109 (1976-07-01), Tanczyn
patent: 4486321 (1984-12-01), Fujiwara et al.
Handbook of Stainless Steel-David Peckner & I. M. Bernstein, copyright 1977, McGraw-Hill Inc., pp. 10-2 to 10-18.

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