Tungsten Wire Heating Filament
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Product Description
tungsten wire heating filament
Chemical composition:
| Mark | Tungsten Content | Impurity | |
Total content | Individual element content | ||
WAL1,WAL2 | =99.95% | =0.05% | =0.01% |
W1 | =99.95% | =0.05% | =0.01% |
W2 | =99.92% | =0.05% | =0.01% |
Attention: Potassium is not as impurity content | |||
Specification:
Diameter (µm) | Weight (mg/200mm) | 200m weight tolerance(%) | Diameter Tolerance (%) | |||
Grade 0 | Grade ? | Grade ? | Grade ? | Grade ? | ||
8 | 0.19 | ±3.0 | ±4.0 | ±5.0 | ---- | |
14 | 0.59 | ±2.5 | ±3.0 | ±4.0 | --- | |
18 | 0.98 | ±2.0 | ±2.5 | ±3.0 | --- | |
40 | 4.85 | ±1.5 | ±2.0 | ±2.5 | — | |
80 | 19.39 | ±1.0 | ±1.5 | ±2.0 | ||
300 | 19.39 | — | ±1.0 | ±1.5 | — | |
350 | — | — | ±1.5 | ±2.0 | ||
d>500 | — | — | ±1.0 | ±1.5 | ||
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