牌号
|
化学成分,%
|
|||||||||
v
|
si
|
al
|
c
|
p
|
s
|
as
|
cu
|
mn
|
ni
|
|
≤
|
≤
|
≤
|
≤
|
≤
|
≤
|
≤
|
≤
|
≤
|
||
fev40
|
35.0-50.0
|
2
|
4
|
0.1
|
0.1
|
0.1
|
? | ? | ? | ? |
fev60
|
50.0-65.0
|
2
|
2.5
|
0.06
|
0.05
|
0.05
|
0.06
|
0.1
|
? | ? |
fev80
|
75.0-85.0
|
2
|
1.5
|
0.06
|
0.05
|
0.05
|
0.06
|
0.1
|
0.5
|
0.15
|
fev80a2
|
75.0-85.0
|
1.5
|
2
|
0.06
|
0.05
|
0.05
|
0.06
|
0.1
|
0.5
|
0.15
|
fev80al4
|
70.0-80.0
|
2
|
4
|
0.1
|
0.1
|
0.1
|
0.1
|
0.1
|
0.5
|
0.15
|