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Tungsten wire
Tungsten wire is a fine wire made by forging and drawing tungsten bars. Tungsten wire is mainly used in incandescent lamps, halogen tungsten lamps and other electric light sources. In addition, a small amount of oxides of potassium, silicon and aluminum should be added into the tungsten wire used as various luminescent materials in the bulb. This tungsten wire is called doped tungsten wire
Type |
Tungsten content |
Impurity element content |
||
Total |
Each |
|||
WAL1, WAL2 |
≥99.95% |
≤0.05% |
≤0.01% |
|
W1 |
≥99.95% |
≤0.05% |
≤0.01% |
|
W2 |
≥99.92% |
≤0.08% |
≤0.01% |
|
Note: potassium is not included in impurity content. | ||||
Tungsten wire is used as heating material of high temperature furnace, thermite of electronic tube and reinforcing rib of composite material, and most of them are used to make filament of various incandescent lamps and halogen tungsten lamps and electrode of gas discharge lamp.
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