HM3模具钢化学成分(%)
能镀铬吗 C:0.24 ~0.33
SI:≤0.60
MN:≤0.35
CR:2.60 ~3.20
MO:2.70 ~3.20
V:0.60 ~0.80
NB:0.08 ~0.15
P:≤0.030
S:≤0.030