|
Designation
|
Tungsten content
|
Content of impurity element
|
|
|
Total content
|
Content of each element
|
||
|
WAL1,WAL2
|
≥99.95%
|
≤0.05%
|
≤0.01%
|
|
W1
|
≥99.95%
|
≤0.05%
|
≤0.01%
|
|
W2
|
≥99.92%
|
≤0.08%
|
≤0
|
|
Usages: * Manufacturing electric light source, and electric vacuum parts * Used as high-temperature heating unit parts and high-temperature structure parts * Making electric contacts. |