牌號(hào) |
質(zhì)量等級(jí) |
化學(xué)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
|