探讨了３种低合金钢的冲击韧性与冲击磨料磨损性能，并与ＺＧ５０Ｍｎ２进行对比；结果表明，当低合金钢的化学成分为：０２５％～０３０％Ｃ；０．８０％～１．００％Ｓｉ；０．７０％～０．９０％Ｍｎ；１．４％～１．５％Ｃｒ；０．４％～０．５％Ｍｏ和０．９％～１．０％Ｎｉ时，其冲击韧性与耐磨性是最好的 The impact toughness and impact abrasive wear performance of three kinds of low alloy steels were investigated and compared with that of ZG50Mn2. The results showed that when the chemical composition of low alloy steels was 025% ~ 030% C and 0.80% 1.00% Si; 0.70% -0.90% Mn; 1.4% -1.5% Cr; 0.4% -0.5% Mo and 0.9% -1.0% Ni , Its impact toughness and wear resistance is the best