22mm | Q345QC | 切边 | 12000 | 2500 |
22mm | Q345QC | 切边 | 11200 | 2500 |
22mm | Q345QC | 切边 | 11600 | 2500 |
22mm | Q345QC | 切边 | 11300 | 2500 |
24mm | Q345QC | 切边 | 10800 | 2500 |
24mm | Q345QC | 切边 | 11000 | 2500 |
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1)牌号和化学成分见表3-10。
表3-10低合金高强度结构钢的牌号和化学成分
牌号
|
等
级
|
化学成分(质量分数)(%)
|
||||||||||
C≤
|
Mn
|
Si
≤
|
P
≤
|
S
≤
|
V
|
Nb
|
Ti
|
Al≥
|
Cr≤
|
Ni≤
|
||
Q295
|
A
|
O.16
|
0.80
~1.50
|
0.55
|
0.045
|
0.045
|
0.02
~O.15
|
0.015
~O.060
|
O.02
~0.20
|
|
|
|
B
|
0.040
|
O.040
|
|
|
|
|||||||
Q345
|
A
|
O.20
|
1.00
~1.60
|
0.55
|
0.045
|
O.045
|
0.02
~O.15
|
0.015
~O.060
|
0.02
~O.20
|
|
|
|
B
|
O.040
|
O.040
|
|
|
|
|||||||
C
|
0.035
|
0.035
|
O.015
|
|
|
|||||||
D
|
O.18
|
0.030
|
O.030
|
O.015
|
|
|
||||||
E
|
0.025
|
O.025
|
O.015
|
|
|
|||||||
Q390
|
A
|
0.20
|
1.00
~1.60
|
O.55
|
0.045
|
0.045
|
O.02
~O.20
|
O.015~
0.060
|
O.02
~O.20
|
|
O.30
|
0.70
|
B
|
O.040
|
O.040
|
|
O.30
|
O.70
|
|||||||
C
|
O.035
|
O.035
|
O.015
|
0.30
|
O.70
|
|||||||
D
|
O.030
|
0.030
|
0.015
|
O.30
|
0.70
|
|||||||
E
|
0.025
|
O.025
|
O.015
|
O.30
|
0.70
|
|||||||
Q420
|
A
|
O.20
|
1.00
~
1.70
|
O.55
|
O.045
|
O.045
|
O.02
~0.20
|
O.015
~0.060
|
0.02
~O.20
|
|
O.40
|
O.70
|
B
|
0.040
|
O.040
|
|
O.40
|
O.70
|
|||||||
C
|
O.035
|
O.035
|
0.015
|
0.40
|
O.70
|
|||||||
D
|
O.030
|
0.030
|
0.015
|
O.40
|
O.70
|
|||||||
E
|
0.025
|
0.025
|
0.015
|
O.40
|
O.70
|
|||||||
Q460
|
C
|
O.20
|
1.00
~
1.70
|
O.55
|
0.035
|
0.035
|
0.02
~0.20
|
0.015
~O.060
|
0.02
~O.20
|
O.015
|
O.70
|
0.70
|
D
|
O.030
|
0.030
|
0.015
|
0.70
|
0.70
|
|||||||
E
|
0.025
|
O.025
|
O.015
|
0.70
|