Appearance : Silver gray metallic luster .
Grade : W-1 W-2 W-3 W-4
Density: ≥17.0g /cm3
Main application : W-1 is used for making the pole , wire drawing , or doing steel-making additive . W-4 is used as the steel-making additives .
The impurity content accords with GB3459-82
Grade : W-1 W-2 W-3 W-4
Density: ≥17.0g /cm3
Main application : W-1 is used for making the pole , wire drawing , or doing steel-making additive . W-4 is used as the steel-making additives .
The impurity content accords with GB3459-82
|
Grade
|
W-1
|
W-2
|
W-3
|
W-4
|
|
|
The impurity
Content is not more than % |
Pb
|
--
|
--
|
--
|
0.001
|
|
Bi
|
--
|
--
|
--
|
0.001
|
|
|
Sn
|
--
|
--
|
--
|
0.001
|
|
|
Sb
|
--
|
--
|
--
|
0.001
|
|
|
As
|
--
|
--
|
--
|
0.002
|
|
|
Fe
|
0.005
|
0.005
|
0.010
|
0.05
|
|
|
Ni
|
0.003
|
0.003
|
0.005
|
0.30
|
|
|
Al
|
0.002
|
0.002
|
0.005
|
0.005
|
|
|
Si
|
0.003
|
0.003
|
0.010
|
0.010
|
|
|
Ca
|
0.003
|
0.003
|
0.005
|
0.005
|
|
|
Mg
|
0.002
|
0.002
|
0.005
|
0.010
|
|
|
Mo
|
0.010
|
0.010
|
0.20
|
0.20
|
|
|
P
|
0.001
|
0.001
|
0.002
|
0.005
|
|
|
C
|
0.005
|
0.008
|
0.010
|
0.010
|
|
|
O
|
0.003
|
0.003
|
0.005
|
0.010
|
|
|
N
|
0.003
|
0.003
|
--
|
--
|
|