|
Appearance: Silver gray metallic luster
Grade：W-1 W-4
Density：>=17.0g/cm3
main applications: W-1 divided into incipient fusion tungsten bar and sinter tungsten bar, Incipient fusion tungsten bar is used for making the pole, drawing wire; Sinter W-1 and W-4 is used as the steel additive.
The impurity content accords withGB3459-82 standard
|
Impurity content |
Grade |
W-1 |
W-4 |
Impurity content |
Grade |
W-1 |
W-4 |
|
Impurity content max %
|
Pb |
- |
0.001 |
Impurity content max %
|
Si |
0.003 |
0.010 |
|
Bi |
- |
0.001 |
Ca |
0.003 |
0.005 |
|
Sn |
- |
0.001 |
Mg |
0.002 |
0.010 |
|
Sb |
- |
0.001 |
Mo |
0.010 |
0.200 |
|
As |
- |
0.002 |
P |
0.001 |
0.005 |
|
Fe |
0.005 |
0.050 |
C |
0.005 |
0.010 |
|
Ni |
0.003 |
0.300 |
O |
0.003 |
0.008 |
|
Al |
0.002 |
0.005 |
N |
0.003 |
- |
|
