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牌號 |
等
級 |
化學成分(質(zhì)量分數(shù))(％) | ||||||||||
|
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 |
0.70 | |||||||
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