Through analysing, calculating and alloy designing, this article determined the content of Mn which is used to replace Ni, and then gained the LCHA with different Mn content through fusion metallurgy.

• 通过分析、计算和合金设计,确定了以锰代镍的含量,然后熔炼得到的几种不同锰含量的低碳高合金钢。