Austenitic free-cutting stainless steel
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United States of America Patent
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Issued Date -
Oct 2, 2008
app pub date -
Mar 31, 2008
filing date -
Mar 31, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention relates to an austenitic free-cutting stainless steel, containing: by weight percent, 0.500% or less of C; 0.01 to 5.00% of Si; 0.01 to 10.00% of Mn; 5.00 to 25.00% of Ni; 7.50 to 30.00% of Cr; 0.300% or less of N; more than 0.0100% but not more than 0.1000% of 0; 0.0020 to 0.1000% of B; 0.300% or less of Al; and the remainder of Fe and inevitable impurities, the steel satisfying the following formula (1): 0.68.ltoreq.[O]/[B].ltoreq.2.50 (1) in which [O] represents the content of O and [B] represents the content of B.
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