Oxidation-resisting austenitic stainless steel

Details Oxidation-resisting austenitic stainless steel Oxidation-resisting austenitic stainless steel

1976-04-23

1977-12-20

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75122, 75128E, C22C 3834, C22C 3840

Patent

active

040639355

ABSTRACT:
An austenitic stainless steel substantially comprising not more than 0.15% by weight of C, 2.56 - 4.0% by weight of Si, not more than 2.0% by weight of Mn, 8 - 22% by weight of Ni, 16 - 25% by weight of Cr, 0.001 - 0.05% by weight of at least one alkaline earth metal, 0 - 2.5% by weight of Al, 0 - 0.1% by weight of at least one rare earth metal, 0 - 1.0% by weight of at least one of Nb, Ta, Ti, Zr and Hf, 0 - 2.0% by weight of Cu and balance Fe is disclosed. This class of steels are superior to the known high Si oxidation-resisting austenitic stainless steels in oxidation resistance especially in resistance to scaling, are of the same level in high temperature strength, and are much less expensive.

REFERENCES:
patent: 2553330 (1951-05-01), Post et al.
patent: 2687954 (1954-08-01), Lohr
patent: 3729308 (1973-04-01), Eiselstein et al.
patent: 3900316 (1975-08-01), Jones
patent: 3929520 (1975-12-01), Hellner
patent: 3989514 (1976-11-01), Fujioka et al.

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