Oxidation-resisting austenitic stainless steel

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

1977-07-11

1978-08-22

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75122, 75125, 75128C, 75128E, 75128G, 75128Z, 75128T, C22C 3806, C22C 3842, C22C 3848, C22C 3850

Patent

active

041086414

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: 2687954 (1954-08-01), Lohr
patent: 3729308 (1973-04-01), Eiselstein et al.
patent: 3837846 (1974-09-01), Becker et al.
patent: 3900316 (1975-08-01), Forbes Jones
patent: 3929520 (1975-12-01), Hellner et al.

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