Heat-resisting austenitic stainless steel

Details Heat-resisting austenitic stainless steel Heat-resisting austenitic stainless steel

1975-03-25

1976-11-02

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75122, 75128R, 75128C, 75128E, 75128G, 75128T, 75128Z, C22C 3848, C22C 3850

Patent

active

039895149

ABSTRACT:
An austenitic stainless steel comprising not more than 0.15% by weight of C, 1.5 - 4.0% by weight of Si, not more than 2% by weight of Mn, 17.0 - 30.0% by weight of Ni, 24.0 - 32.0% by weight of Cr, 0.5 - 2.5% by weight of Al, 0.001 - 0.100% by weight of Ca, 0.001 - 0.100% by weight of at least one rare earth metal, 0 - 1.0% by weight of at least one of Ti, Zr, Hf, Nb and Ta, and balance Fe and incidental impurities is disclosed. Steels of this class are superior to the known high Si oxidation-resisting austenitic stainless steels in scaling and nitriding resistance and with stand prolonged use under the circumstances where the steels undergo cyclic heating to high temperatures.

REFERENCES:
patent: 2553330 (1951-05-01), Post et al.
patent: 3754898 (1973-08-01), McGurty
patent: R24242 (1956-12-01), Lohr

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