四、P355GH化学成分
P355GH钢的化学成分（熔炼分析）应符合下表的规定（％）。表1
P355GH化学成分要求
|
C |
Si |
Mn |
P |
S |
Al |
N |
|
0.1-0.22 |
≤0.5 |
1.1-1.7 |
≤0.025 |
≤0.01 |
≥0.02 |
≤0.012 |
|
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
|
≤0.3 |
≤0.3 |
≤0.08 |
≤0.04 |
≤0.3 |
≤0.03 |
≤0.02 |