Corrosion resistant austenitic stainless steel

Details Corrosion resistant austenitic stainless steel Corrosion resistant austenitic stainless steel

1979-01-26

1980-08-12

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75126B, 75126J, 75128N, C22C 3920

Patent

active

042171369

ABSTRACT:
A substantially non-porous, austenitic stainless steel that is resistant to chloride pitting and sulfuric acid and a method for making it are disclosed. The steel includes from 21-45% manganese, from 10-30% chromium, from 0.85-3% nitrogen, from 0-1% carbon, from 0-2% silicon, and at least two elements selected from 1-3% copper, 1-4% nickel and 1-4% molybdenum with the combined weight of copper, nickel and molybdenum not exceeding 5% of the composition, and the balance iron and residuals, wherein the composition is such that: ##EQU1## The steel is cast and worked to avoid a dwell period in the temperature range of 1000.degree.-1600.degree. F.

REFERENCES:
patent: 2745740 (1956-05-01), Jackson et al.
patent: 2778731 (1957-01-01), Carney

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