C |
Mn |
Si |
S |
P |
≤0.08 |
1.25~1.80 |
0.20~0.55 |
≤0.010 |
≤0.010 |
Ni |
Mo |
Ti |
Al |
Cu |
1.40~2.10 |
0.25~0.55 |
≤0.10 |
≤0.10 |
≤0.50 |
試驗項目 |
Rm/MPa |
ReL/Rp0.2/MPa |
A(%) |
KV2/J(-50℃) |
保護氣體 |
保證值 |
≥690 |
≥610 |