Tungsten-Copper (WCu)
W-Cu Composite
A unique composite material combining tungsten's exceptional wear resistance and arc erosion properties with copper's superior thermal and electrical conductivity.
Material Properties
Tungsten-copper is a pseudo-alloy (composite) where tungsten particles are infiltrated with copper. This creates a material that cannot be achieved through conventional alloying, offering properties from both metals tailored to specific applications.
Applications
- High-voltage electrical contacts
- Circuit breaker arcing contacts
- EDM (Electrical Discharge Machining) electrodes
- Resistance welding electrodes
- Heat sinks for electronic packages
- Semiconductor heat spreaders
- Vacuum interrupter contacts
- Plasma-facing components
- Aerospace thermal management
- RF/microwave packaging
Available Grades
W90Cu10
90% Tungsten, 10% Copper
Maximum arc erosion resistance. Ideal for high-power arcing contacts.
W80Cu20
80% Tungsten, 20% Copper
Excellent balance of wear resistance and conductivity. Popular for EDM electrodes.
W75Cu25
75% Tungsten, 25% Copper
Standard grade for electrical contacts and resistance welding electrodes.
W70Cu30
70% Tungsten, 30% Copper
Higher thermal conductivity. Excellent for heat sink applications.
Grade Comparison
| Grade | Density (g/cm³) | Thermal Cond. (W/mK) | Elec. Cond. (% IACS) | Hardness (HV) |
|---|---|---|---|---|
| W90Cu10 | 17.0 | 170 | 32 | 280-320 |
| W80Cu20 | 15.5 | 185 | 38 | 240-280 |
| W75Cu25 | 14.5 | 200 | 40 | 220-260 |
| W70Cu30 | 13.8 | 210 | 45 | 200-240 |
Available Forms
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