Grades and Compositions
W-Cu sheets are available in various compositions, typically ranging from 50% to 90% tungsten by weight. The specific grade affects the material’s properties:
| Grade (W/Cu) | Density (g/cm³) | Hardness (HB) | Electrical Conductivity (% IACS) | Resistivity (μΩ·cm) | Bending Strength (MPa) |
| 50/50 | 11.85 | 115 | 54 | 3.2 | — |
| 60/40 | 12.75 | 140 | 47 | 3.7 | — |
| 70/30 | 13.80 | 175 | 42 | 4.1 | 790 |
| 80/20 | 15.15 | 220 | 34 | 5.0 | 980 |
| 90/10 | 16.75 | 260 | 27 | 6.5 | 1160 |
Note: Higher tungsten content increases density and hardness but decreases electrical conductivity.
Sizes and Dimensions
W-Cu sheets are manufactured in various sizes to meet diverse application requirements:
- Thickness: Ranges from 0.05 mm to 50 mm.
- Width: Up to 300 mm.
- Length: Up to 1000 mm.
Custom sizes are available upon request. Manufacturers can produce sheets with specific dimensions to suit particular applications.
Applications
Due to their unique combination of properties, W-Cu sheets are utilized in various high-performance applications:
- Electrical Contacts: High-voltage circuit breakers and switches.
- Heat Sinks: Thermal management in electronic devices.
- Electrodes: Electrical discharge machining (EDM) and resistance welding.
- Aerospace Components: Rocket nozzles and heat shields.
- Radiation Shielding: Medical and nuclear applications.
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