Corrosion resistant austenitic steel

Details Corrosion resistant austenitic steel Corrosion resistant austenitic steel

1979-01-26

1980-08-12

Andrews, M. J.

Metal treatment

Compositions

Heat treating

148 12E, 148 124, 148 14, C21D 714

Patent

active

042171504

ABSTRACT:
A substantially non-porous, sulfuric acid resistant austenitic stainless steel and a method for making it are disclosed. The steel includes from 15-45% manganese, from 10-30% chromium, from 1-3% copper, from 0.85-3% nitrogen, from 0-2% silicon, from 0-1% carbon, and the balance iron and residuals. In addition to containing the foregoing elements within the above-noted composition ranges, the alloys must be such that: ##EQU1## The steels are cast and worked to avoid a dwell period in the temperature range 1000-1600.degree. F.

REFERENCES:
patent: 2745740 (1956-05-01), Jackson et al.
patent: 2778731 (1957-01-01), Carney
patent: 2862812 (1958-12-01), Dulis et al.
patent: 2909425 (1959-10-01), Hsiao et al.
patent: 2940880 (1960-06-01), Stanley et al.
patent: 3854938 (1974-12-01), Baybrook et al.
patent: 3876475 (1975-04-01), Ramquist

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