C |
Mn |
Si |
Cr |
Ni |
Mo |
S |
P |
Cu |
≤0.04 |
0.5-2.5 |
≤0.90 |
22.0-25.0 |
12.0-14.0 |
≤0.75 |
≤0.030 |
≤0.040 |
≤0.75 |
抗拉強(qiáng)度(бb)MPa |
伸長(zhǎng)率(δ5)% |
|
| ||
≥520 |
≥25 |
|