公开(公告)号：US20080240970A1

公开(公告)日：2008-10-02

申请号：US12078378

申请日：2008-03-31

申请人： Hisao Eto ,  Tetsuya Shimizu

发明人： Hisao Eto ,  Tetsuya Shimizu

IPC分类号： C22C38/60 ,  C22C38/08 ,  C21D6/00

CPC分类号： C22C38/54 ,  C21D6/004 ,  C22C38/58 ,  Y02E50/12

摘要： 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≦[O]/[B]≦2.50   (1) in which [O] represents the content of O and [B] represents the content of B.

摘要翻译： 本发明涉及奥氏体自由切削不锈钢，其含有：按重量百分比计，0.5％以下的C; 0.01〜5.00％的Si; 0.01〜10.00％的Mn; 镍的5.00〜25.00％ 7.50〜30.00％的Cr; 0.300％以下N; 超过0.0100％但不超过0.1000％的0; 0.0020〜0.1000％; 0.300％以下的Al; 剩余的Fe和不可避免的杂质，满足下列公式（1）的钢：<？in-line-formula description =“In-line formula”end =“lead”？> 0.68 <= [O] / [B ] <= 2.50（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中[O]表示O的内容，[B]表示B的内容。