化学性能:
C |
≤0.12 |
Si |
≤0.40 |
Mn |
≤1.8 |
P |
≤0.025 |
S |
≤0.015 |
Ni |
≤0.75 |
Cr |
≤0.70 |
Mo |
≤0.50 |
Nb |
≤0.060 |
Ti |
≤0.020 |
B |
≤0.0020 |
力学性能:
Rel Mpa |
≥685 |
Rm Mpa |
≥785 |
标距(mm) |
LO=50 |
A% |
≥15 |
180°弯曲试验 |
d=3a |
冲击试验Akv J |
-20℃冲击≥40 |