牌號 |
質量等級 |
化學成分,% |
C ≤ |
Mn ≤ |
Si ≤ |
P ≤ |
S ≤ |
V |
Nb |
Ti |
A1 ≥ |
Cr ≤ |
Ni ≤ |
Q295 |
A B |
0.16 0.16 |
0.80-1.50 0.80-1.50 |
0.55 0.55 |
0.045 0.040 |
0.045 0.040 |
0.02-0.15 0.02-0.15 |
0.015-0.060 0.015-0.060 |
0.02-0.20 0.02-0.20 |
- - |
|
|
Q345 |
A B C D E |
0.20 0.20 0.20 0.18 0.18 |
1.00-1.60 1.00-1.60 1.00-1.60 1.00-1.60 1.00-1.60 |
0.55 0.55 0.55 0.55 0.55 |
0.045 0.040 0.035 0.030 0.025 |
0.045 0.040 0.035 0.030 0.025 |
0.02-0.15 0.02-0.15 0.02-0.15 0.02-0.15 0.02-0.15 |
0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 |
0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 |
- - 0.015 0.015 0.015 |
Q390 |
A B C D E |
0.20 0.20 0.20 0.20 0.20 |
1.00-1.60 1.00-1.60 1.00-1.60 1.00-1.60 1.00-1.60 |
0.55 0.55 0.55 0.55 0.55 |
0.045 0.040 0.035 0.030 0.025 |
0.045 0.040 0.035 0.030 0.025 |
0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 |
0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 |
0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 |
- - 0.015 0.015 0.015 |
0.30 0.30 0.30 0.30 0.30 |
0.70 0.70 0.70 0.70 0.70 |
Q420 |
A
B C D E |
0.20 0.20 0.20 0.20 0.20 |
1.00-1.70 1.00-1.70 1.00-1.70 1.00-1.70 1.00-1.70 |
0.55 0.55 0.55 0.55 0.55 |
0.045 0.040 0.035 0.030 0.025 |
0.045 0.040 0.035 0.030 0.025 |
0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 |
0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 0.015-0.06 |
0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 0.02-0.20 |
- - 0.015 0.015 0.015 |
0.40 0.40 0.40 0.40 0.40 |
0.70 0.70 0.70 0.70 0.70 |
Q460 |
C
D E |
0.20 0.20 0.10 |
1.00-1.70 1.00-1.70 1.00-1.70 |
0.55 0.55 0.55 |
0.035 0.030 0.025 |
0.035 0.030 0.025 |
0.02-0.20 0.02-0.20 0.02-0.20 |
0.015-0.06 0.015-0.06 0.015-0.06 |
0.02-0.20 0.02-0.20 0.02-0.20 |
0.015 0.015 0.015 |
0.70 0.70 0.70 |
0.70 0.70 0.70 |