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Tungsten powder
Tungsten powder appearance: Tungsten powder is dark grey, spraying tungsten powder is bright grey.
Application: For large W plate, W-Re thermocouple, contact alloy etc.
Specifications:
| Grade | Main Composition Min. W (%) | Oxygen Content (%) | Particle Size Specs (μ m) |
| FW-1 | ≥99.9 | ≤0.20 | Negotiated by Both Sides |
| FW-2 | ≤0.25 | ||
| FWP-1 | ≤0.20 |
Impurity Content:
| Grade | FW-1 | FW-2 | FWP-1 | |
| Impurity Content Max. (%) | Pb | 0.0001 | 0.001 | 0.001 |
| Bi | 0.0001 | 0.001 | 0.001 | |
| Sn | 0.0001 | 0.001 | 0.001 | |
| Sb | 0.001 | 0.001 | 0.001 | |
| As | 0.002 | 0.002 | 0.002 | |
| Fe | 0.005 | 0.020 | 0.030 | |
| Ni | 0.002 | 0.005 | 0.005 | |
| Cu | 0.001 | 0.003 | ||
| Al | 0.001 | 0.003 | 0.005 | |
| Si | 0.002 | 0.010 | 0.010 | |
| Ca | 0.001 | 0.005 | 0.005 | |
| Mg | 0.001 | 0.005 | 0.005 | |
| Mo | 0.005 | 0.020 | 0.020 | |
| P | 0.001 | 0.005 | 0.005 | |
| C | 0.005 | 0.008 | 0.010 | |
| K | 0.015 | 0.002 | ||
| Na | 0.015 | 0.002 | ||
| Co | 0.001 | |||
| Cr | 0.001 | |||
| Ti | 0.001 | |||
| V | 0.001 | |||
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