| 发明名称 |
FREE-CUTTING STEEL |
| 摘要 |
A low carbon free cutting steel can be obtained by allowing the steel to contain 0.02 to 0.15 mass % of C, 0.05 to 1.8 mass % of Mn, 0.20 to 0.49 mass % of S, more than 0.01 mass % and not more than 0.03 mass % of O 0.3 to 2.3% of Cr, and the balance consisting of Fe and inevitable impurities, the Cr/S ratio falling within a range of between 2 and 6. <IMAGE> |
| 申请公布号 |
EP1449932(A4) |
申请公布日期 |
2005.01.26 |
| 申请号 |
EP20020783714 |
申请日期 |
2002.11.29 |
| 申请人 |
NKK BARS & SHAPES CO., LTD.;NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY;ISHIDA, KIYOHITO |
发明人 |
ISHIDA, KIYOHITO;MURAKAMI, TOSHIYUKI;SHIRAGA, TETSUO;OIKAWA, KATSUNARI |
| 分类号 |
C22C38/00;C22C38/04;C22C38/18;C22C38/58;C22C38/60 |
主分类号 |
C22C38/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
