| 准 |
牌号 |
化学成分（%） |
||||
| C |
Si |
Mn |
P |
S |
||
| GB/T5312 |
320 |
≤0.16 |
≤0.35 |
0.40～0.70 |
≤0.035 |
≤0.035 |
| 360 |
≤0.17 |
≤0.35 |
0.40～0.80 |
≤0.035 |
≤0.035 |
|
| 410 |
≤0.21 |
≤0.35 |
0.40～1.20 |
≤0.035 |
≤0.035 |
|
| 460 |
≤0.22 |
≤0.35 |
0.80～1.40 |
≤0.035 |
≤0.030 |
|
| 490 |
≤0.23 |
≤0.35 |
0.80～1.50 |
≤0.035 |
≤0.030 |
注：残余元素Cr≤0.25%，Mo≤0.10%，Ni≤0.30%，Cu≤0.30%总量≤0.70%
