廣東のQ355——>|Q390低合金高強(qiáng)鋼板++++>>>>>>>> 板 卷 棒 材 帶 鐵 鋼卷 板材 厚板 中厚板 薄板 冷板 熱板 熱軋板卷 深沖板 沖壓板 碳板 鐵板 高錳鋼 錳板 高鉻鋼 鉬鋼 鉻鉬鋼板 圓鋼 鋼棒 棒材 圓棒 光圓 規(guī)格 型號(hào) 尺寸 機(jī)軋 冷軋 熱軋 調(diào)質(zhì)
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等級(jí)
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C
|
Mn
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Si
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P
|
S
|
V
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Nb
|
Ti
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Al
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Cr
|
Ni
|
|
A
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≤0.20
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1.00～1.60
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≤0.55
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≤0.045
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≤0.045
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0.02～0.20
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0.015～0.060
|
0.02～0.20
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-
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≤0.30
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≤0.70
|
|
B
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≤0.20
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1.00～1.60
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≤0.55
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≤0.040
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≤0.040
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0.02～0.20
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0.015～0.060
|
0.02～0.20
|
-
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≤0.30
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≤0.70
|
|
C
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≤0.20
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1.00～1.60
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≤0.55
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≤0.035
|
≤0.035
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0.02～0.20
|
0.015～0.060
|
0.02～0.20
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≥0.015
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≤0.30
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≤0.70
|
|
D
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≤0.20
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1.00～1.60
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≤0.55
|
≤0.030
|
≤0.030
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≥0.015
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≤0.30
|
≤0.70
|
|
E
|
≤0.20
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1.00～1.60
|
≤0.55
|
≤0.025
|
≤0.025
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0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≥0.015
|
≤0.30
|
≤0.70
|
|
等級(jí)
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δ5/%
|
|
A
|
≥19
|
|
B
|
≥19
|
|
C
|
≥20
|
|
D
|
≥20
|
|
E
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≥20
|
|
厚度（直徑、邊長(zhǎng)）/mm
|
≤16
|
>16～35
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>35～50
|
>50～100
|
|
σs/MPa
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≥390
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≥370
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≥350
|
≥330
|
|
等級(jí)￤溫度
|
+20℃
|
0℃
|
-20℃
|
-40℃
|
|
A
|
|
|
|
|
|
B
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≥34
|
|
|
|
|
C
|
|
≥34
|
|
|
|
D
|
|
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≥34
|
|
|
E
|
|
|
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≥27
|
