牌号 |
质量
等级
|
化 学 成 分, % |
C
≤
|
Mn |
Si
≤
|
P
≤
|
S
≤
|
V |
Nb |
Ti |
Al
≥
|
Cr
≤
|
Ni
≤
|
Q295 |
A
B
|
0.16
0.16
|
0.08~1.50
0.08~1.50
|
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
|
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
|
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
|
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
|
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
|
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
0.015~0.060
|
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
0.20
|
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
|
0.015~0.060
0.015~0.060
0.015~0.060
|
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
|