广东のQ355——>|Q390低合金高强钢板++++>>>>>>>> 板 卷 棒 材 带 铁 钢卷 板材 厚板 中厚板 薄板 冷板 热板 热轧板卷 深冲板 冲压板 碳板 铁板 高锰钢 锰板 高铬钢 钼钢 铬钼钢板 圆钢 钢棒 棒材 圆棒 光圆 规格 型号 尺寸 机轧 冷轧 热轧 调质
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等级
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C
|
Mn
|
Si
|
P
|
S
|
V
|
Nb
|
Ti
|
Al
|
Cr
|
Ni
|
|
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
|
≤0.20
|
1.00～1.60
|
≤0.55
|
≤0.040
|
≤0.040
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
-
|
≤0.30
|
≤0.70
|
|
C
|
≤0.20
|
1.00～1.60
|
≤0.55
|
≤0.035
|
≤0.035
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≥0.015
|
≤0.30
|
≤0.70
|
|
D
|
≤0.20
|
1.00～1.60
|
≤0.55
|
≤0.030
|
≤0.030
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≥0.015
|
≤0.30
|
≤0.70
|
|
E
|
≤0.20
|
1.00～1.60
|
≤0.55
|
≤0.025
|
≤0.025
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≥0.015
|
≤0.30
|
≤0.70
|
|
等级
|
δ5/%
|
|
A
|
≥19
|
|
B
|
≥19
|
|
C
|
≥20
|
|
D
|
≥20
|
|
E
|
≥20
|
|
厚度（直径、边长）/mm
|
≤16
|
>16～35
|
>35～50
|
>50～100
|
|
σs/MPa
|
≥390
|
≥370
|
≥350
|
≥330
|
|
等级￤温度
|
+20℃
|
0℃
|
-20℃
|
-40℃
|
|
A
|
|
|
|
|
|
B
|
≥34
|
|
|
|
|
C
|
|
≥34
|
|
|
|
D
|
|
|
≥34
|
|
|
E
|
|
|
|
≥27
|
