| 发明名称 | Ferritic stainless steel | ||
| 摘要 | The invention provides ferritic stainless steels exhibiting good weldability and excellent corrosion resistance even under such welding conditions that sensitization is induced. The ferritic stainless steel includes, by mass %, C: 0.001 to 0.030%, Si: more than 0.3 to 0.55%, Mn: 0.05 to 0.50%, P: not more than 0.05%, S: not more than 0.01%, Cr: 19.0 to 28.0%, Ni: 0.01 to less than 0.30%, Mo: 0.2 to 3.0%, Al: more than 0.08 to 1.2%, V: 0.02 to 0.50%, Cu: less than 0.1%, Nb: 0.005 to 0.50%, Ti: 0.05 to 0.50%, and N: 0.001 to 0.030%, the balance being Fe and inevitable impurities, the ferritic stainless steel satisfying Equations (1) and (2). | ||
| 申请公布号 | US9487849(B2) | 申请公布日期 | 2016.11.08 |
| 申请号 | US201214360192 | 申请日期 | 2012.11.28 |
| 申请人 | JFE STEEL CORPORATION | 发明人 | Ishii Tomohiro;Ishikawa Shin;Ogata Hiroyuki |
| 分类号 | C22C38/42;C22C38/44;C22C38/46;C22C38/48;C22C38/50;C22C38/52;C21D9/46;C22C38/00;C22C38/54;C22C38/02;C22C38/04;C22C38/06 | 主分类号 | C22C38/42 |
| 代理机构 | RatnerPrestia | 代理人 | RatnerPrestia |
| 主权项 | 1. A ferritic stainless steel comprising, by mass %, C: 0.001 to 0.030%, Si: more than 0.3 to 0.55%, Mn: 0.05 to 0.50%, P: not more than 0.05%, S: not more than 0.01%, Cr: 19.0 to 28.0%, Ni: 0.01 to less than 0.30%, Mo: 0.2 to 3.0%, Al: more than 0.08 to 1.2%, V: 0.02 to 0.50%, Cu: less than 0.1%, Nb: 0.005 to 0.50%, Ti: 0.05 to 0.50%, and N: 0.001 to 0.030%, the balance being Fe and inevitable impurities, the ferritic stainless steel satisfying the following equations (1) and (2): 0.6≦Si+Al+Ti≦1.8 (1) Nb+1.3Ti+0.9V+0.2Al>0.55 (2) wherein the chemical symbols in the expressions represent the contents (mass %) of the respective elements; and wherein the ferritic stainless steel sheet has a pitting potential of 0 mVolt or above. | ||
| 地址 | Tokyo JP | ||