牌號(hào) |
C |
Mn |
Si |
Cr |
Mo |
Nb |
S |
P |
其他 |
YD627Mo |
4.5~6.0 |
0.5~1.5 |
0.5~1.5 |
24~32 |
0.5~1.5 |
—— |
≤0.02 |
≤0.02 |
≤2.0 |
YD627Nb |
4.5~6.0 |
0.5~1.5 |
0.5~2.0 |
18~24 |
—— |
4~7 |
≤0.02 |
≤0.02 |
≤2.0 |
牌號(hào) |
試驗(yàn)項(xiàng)目 |
剪切強(qiáng)度T/MPa |
HRC |
YD627Mo |
保證值 |
350~450 |
59~64 |