| 发明名称 | Low-nickel austenitic stainless steel | ||
| 摘要 | The invention relates to a low-nickel austenitic stainless steel with high resistance to delayed cracking and the use of the steel. The steel contains in weight % 0.02-0.15% carbon, 7-15% manganese, 14-19% chromium, 0.1-4% nickel, 0.1-3% copper, 0.05-0.3% nitrogen, the balance of the steel being iron and inevitable impurities, and the chemical composition range in terms of the sum of carbon and nitrogen contents (C+N) and the measured Md3o-temperature is inside the area defined by the points ABCD which have the following values Point Md30° C. C+N % A−80 0.1 B+7 0.1 C−40 0.40 D−80 0.40. | ||
| 申请公布号 | US9039961(B2) | 申请公布日期 | 2015.05.26 |
| 申请号 | US201113643920 | 申请日期 | 2011.04.18 |
| 申请人 | Outokumpu Oyj | 发明人 | Talonen Juho;Kodukula Suresh;Taulavuori Tero |
| 分类号 | C22C38/58;C22C38/42;C21D6/00;C22C38/00;C22C38/02 | 主分类号 | C22C38/58 |
| 代理机构 | Chernoff, Vilhauer, McClung & Stenzel, LLP | 代理人 | Chernoff, Vilhauer, McClung & Stenzel, LLP |
| 主权项 | 1. Low-nickel austenitic stainless steel with high resistance to delayed cracking wherein the steel contains in weight % 0.02-0.15% carbon, 7-15% manganese, 14-19% chromium, 0.1-4% nickel, 0.1-3% copper, 0.05-0.35% nitrogen, the balance of the steel being iron and inevitable impurities, and a drawing ratio at least 2.0 in deep drawing is achieved to the steel without occurrence of delayed cracking, and the combination of the sum of carbon and nitrogen contents (C+N) and the austenite stability determined by experimentally measured Md30-temperature of the steel is inside the area defined by the points ABCD which have the following valuesPointMd30 ° C.C + N %A−800.1B+70.1C−40 0.40D−80 0.40. | ||
| 地址 | Espoo FI | ||