化学成分:
| 标准 |
牌号 |
化学成分（%） |
||||||||||
| C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
Als |
||
| API SPEC 5CT |
J55K55 (37Mn5) |
0.34～0.39 |
0.20～0.35 |
1.25～1.50 |
≤0.020 |
≤0.015 |
≤0.15 |
≤0.20 |
≤0.20 |
≤0.020 |
||
| N80 (36 Mn2V) |
0.34～0.38 |
0.20～0.35 |
1.45～1.70 |
≤0.020 |
≤0.015 |
≤0.15 |
0.11～0.16 |
≤0.020 |
||||
| L80(13Cr) |
0.15～0.22 |
≤1.00 |
0.25～1.00 |
≤0.020 |
≤0.010 |
12.0～14.0 |
≤0.20 |
≤0.20 |
≤0.020 |
|||
| P110 (30CrMo) |
0.26～0.35 |
0.17～0.37 |
0.40～0.70 |
≤0.020 |
≤0.010 |
0.80～1.10 |
≤0.20 |
≤0.20 |
0.15～0.25 |
≤0.08 |
≤0.020 |
