| 发明名称 |
STEEL SHEET |
| 摘要 |
A steel sheet according to the present invention includes a predetermined chemical composition, in which amounts of each elements by mass% in the chemical composition satisfy both of expression "0.3000 ‰¤ { Ca / 40.88 + (REM/ 140)/2} /(S /32.07)" and expression "Ca ‰¤ 0.0058 - 0.0050 × C", and a number density of carbonitrides including Ti which exists independently and has a long side of 5µm or more is limited to 5 pieces/mm 2 or less. |
| 申请公布号 |
EP2990500(A1) |
申请公布日期 |
2016.03.02 |
| 申请号 |
EP20140788723 |
申请日期 |
2014.04.24 |
| 申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
MOROHOSHI TAKASHI;ARAMAKI TAKASHI;ZEZE MASAFUMI |
| 分类号 |
C22C38/00;C21C7/04;C21C7/06;C21C7/068;C21D8/02;C21D8/04;C21D9/46;C22C38/02;C22C38/04;C22C38/06;C22C38/08;C22C38/12;C22C38/14;C22C38/16;C22C38/22;C22C38/24;C22C38/26;C22C38/28;C22C38/42;C22C38/50;C22C38/54 |
主分类号 |
C22C38/00 |
| 代理机构 |
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