- 產品
- 供應
- 公司
- 新聞
|
|
||||||||||||||||||||||||||||
Q420鋼板； Q420鋼板；
|
等級
|
C
|
Mn
|
Si
|
P
|
S
|
V
|
Nb
|
Ti
|
Al
|
Cr
|
Ni
|
|
A
|
≦0.20
|
1.00～1.70
|
≦0.55
|
≦0.045
|
≦0.045
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
-
|
≦0.40
|
≦0.70
|
|
B
|
≦0.20
|
1.00～1.70
|
≦0.55
|
≦0.040
|
≦0.040
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
-
|
≦0.40
|
≦0.70
|
|
C
|
≦0.20
|
1.00～1.70
|
≦0.55
|
≦0.035
|
≦0.035
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≧0.015
|
≦0.40
|
≦0.70
|
|
D
|
≦0.20
|
1.00～1.70
|
≦0.55
|
≦0.030
|
≦0.030
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≧0.015
|
≦0.40
|
≦0.70
|
|
E
|
≦0.20
|
1.00～1.70
|
≦0.55
|
≦0.025
|
≦0.025
|
0.02～0.20
|
0.015～0.060
|
0.02～0.20
|
≧0.015
|
≦0.40
|
≦0.70
|
|
等級
|
δ5/%
|
|
A
|
≧18
|
|
B
|
≧18
|
|
C
|
≧19
|
|
D
|
≧19
|
|
E
|
≧19
|
|
厚度（直徑、邊長）/mm
|
≦16
|
>16～35
|
>35～50
|
>50～100
|
|
σs/MPa
|
≧420
|
≧400
|
≧380
|
≧360
|
|
等級￤溫度
|
+20℃
|
0℃
|
-20℃
|
-40℃
|
|
A
|
||||
|
B
|
≧34
|
|||
|
C
|
≧34
|
|||
|
D
|
≧34
|
|||
|
E
|
≧27
|
