|
| ||||
|
Impurity |
Content Impurity, % max | |||
|
W（79.2-80%） Main composition Content W （79.2-80%） Calculated by the Subtraction |
规格 Grade |
#0 |
#1 |
#2 |
|
Al |
0.0005 |
0.001 |
0.001 | |
|
As |
0.001 |
0.001 |
0.002 | |
|
Bi |
0.0001 |
0.0001 |
0.0002 | |
|
Ca |
0.001 |
0.001 |
0.002 | |
|
Cr |
0.001 |
0.001 |
0.001 | |
|
Cu |
0.0003 |
0.0005 |
0.0005 | |
|
Co |
0.001 |
0.001 |
0.001 | |
|
Fe |
0.001 |
0.001 |
0.003 | |
|
K |
0.001 |
0.001 |
0.0015 | |
|
Mg |
0.0007 |
0.001 |
0.001 | |
|
Mn |
0.0005 |
0.001 |
0.001 | |
|
Mo |
0.002 |
0.005 |
0.008 | |
|
Ni |
0.0005 |
0.0007 |
0.001 | |
|
Na |
0.001 |
0.0015 |
0.002 | |
|
P |
0.0007 |
0.001 |
0.0015 | |
|
Pb |
0.0001 |
0.0001 |
0.0001 | |
|
Sn |
0.0001 |
0.0005 |
0.0007 | |
|
Si |
0.001 |
0.001 |
0.002 | |
|
Sb |
0.0003 |
0.0005 |
0.0005 | |
|
S |
0.0007 |
0.0007 |
0.001 | |
|
Ti |
0.001 |
0.001 |
0.001 | |
|
V |
0.001 |
0.001 |
0.001 | |
|
NH |
0.15 |
0.2 |
0.2 | |
