|
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 |
Mechanical properties:
|
Rel MPa |
≥685 |
|
Rm MPa |
≥785 |
|
Gauge length (mm) |
LO=50 |
|
A% |
≥15 |
|
180° bend test |
d=3a |
|
Impact test Akv J |
Impact at -20℃ ≥40 |
Pile Foundation Project of Tengda Center in Taizhou Central Business District Officially Launched
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