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8月26日，山西太钢不锈钢股份有限公司成功申请一项重要专利，名为“一种屈服强度420MPa级高强度奥氏体不锈钢” ，申请公布号为CN120536836A，申请日期是2025年4月21日 。
该发明聚焦于一种特定的高强度奥氏体不锈钢，其化学成分配比精确：C≤0.10％、Si≤1.00％、Mn在6.00～7.50％区间、Cr为17.50～19.50％、Ni处于2.50～4.00％范围、Cu为1.00～2.00％、N≤0.25％ 。并且，在此成分含量基础上，有着严格的关键参数控制。铬镍当量比需控制在1.25～1.50之间 ，Md30温度要维持在30～60..
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