| 摘要 |
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: <IMAGE> (1) %Cr + 0.8(%Mn) - 11.88(%N - 0.1) - (28.5 + %Cu) >/= 0 (2) The steels are cast and worked to avoid a dwell period in the temperature range 1000-1600 DEG F.
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