25MnCrNiMoA钢化学成分(质量分数)%
C0.24~0.28;
Mn1.20~1.50;
Si0.20~0.40;
P≤0.020;
S≤0.020;
Cr0.40~0.60;
Ni0.35~0.55;
Cu≤0.150;
Mo0.20~0.30.