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