工程建筑q390钢板q500中厚板====
等级
|
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
|