Austenite stainless steel
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United States of America Patent
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Jan 12, 1999
Grant Date -
N/A
app pub date -
Jul 30, 1997
filing date -
Aug 15, 1996
priority date (Note) -
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Abstract
Disclosed is an austenite stainless steel comprising: no more than 0.05% by weight of C; no more than 0.25% by weight of Si; no more than 0.40% by weight of Mn; no more than 0.040% by weight of P; no more than 0.003% by weight of S; 30.0 to 40.0% by weight of Ni; 20.0 to 26.0% by weight of Cr; 5.0 to 8.0% by weight of Mo; no more than 0.1% by weight of Al; 0.001 to 0.010% by weight of B; 0.15 to 0.30% by weight of N; and balance of Fe and inevitable impurity. The austenite stainless steel satisfying formula (1) and (2) mentioned below (wherein 'Cr', 'Mo', 'N', 'Si' and 'Mn' mean content of each element). Cr+3.3Mo+20N.gtoreq.51 (1) 5Si+Mn<32-(Cr+Mo) (2)
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