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目前，铁路机车车辆铸钢件采用的一种低合金高强度ＺＧ２５ＭｎＣｒＮｉＭｏ铸钢，只是采用了不同的热处理工艺，就使它的性能完全满足了不同的使用需要。 化学成分≤０．２８％Ｃ；≤０．４０％Ｓｉ；≤１．５０％Ｍｎ；≤０．０４０％Ｐ；≤０．０４０％Ｓ；０．３０％Ｃｕ
At present, a low-alloy and high-strength ZG25MnCrNiMo cast steel for railway rolling stock cast steel uses only different heat treatment process to make it fully meet the performance requirements of different uses. Chemical composition ≤0.28% C; ≤0.40% Si; ≤1.50% Mn; ≤0.040% P; ≤0.040% S; 0.30% Cu