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2025年8月5日,浦项股份有限公司成功申请一项专利,其名称为“具有提高的低温冲击韧性和强度的奥氏体系不锈钢及其制造方法” ,申请公布号为CN120435584A,申请日期回溯至2023年9月4日。

此项发明聚焦于一种奥氏体系不锈钢,该不锈钢在低温冲击韧性和强度方面具备提升特性。以重量%来衡量,其成分构成如下:C含量在0.1%以下(0除外)Si含量为1.5%以下(0除外)Cr含量处于16.0 – 23.0%区间Ni含量在5.0 – 12.0%之间Mn含量为10.0%以下(0除..

此外,该奥氏体系不锈钢遵循特定的公式关系。式(1):1.7Ni + 410C – 0.9Cr – 100N – 13Si – 1.2Mn + 2Cu – 5.5Mo + 40的数值需在10至35之间式(2):(Ni + 0.52Cu + 40(C + N) + 0.7Mn + 45) – (0.48(Cr + Mo + 1.7Si)) – 51的结果要为0以上。这些成分比例和公式关系,对于实现该奥氏体系不锈钢在低温冲击韧性和强度方面的提升具有关键意义。

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