Tungsten Copper
Introduction
Tungsten copper is a kind of pseudo alloy that combine the characteristics of W and Cu. Tungsten has high melting point (W-3410℃, Cu-1083℃), high density (W-19.34g/cm3, Cu-8.92g/cm3); copper has excellent electrical and thermal conductivity. So tungsten copper material has many advantages, such as high strength, arc erosion resistance, which can be widely used in electrical alloy, EDM electrode and micro-electronic materials.
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Characteristic
| Property | Density | CTE 10-6/℃ | λ/K w/m·k | Specific Heat | Elastic Modulus | Poisson Density | Melting Point | Strength |
| W | 19.32g/cm3 | 4.5 | 174 | 136J/kg·℃ | 411GPa | 0.28 | 3410℃ | 550MPa |
| Cu | 8.93g/cm3 | 16.6 | 403 | 385J/kg·℃ | 145GPa | 0.34 | 1083℃ | 120MPa |
Grade
| Grade | Density/ g·cm-3 | Tensile Strength/MPa | Hardness (HB) | Conductivity/MS·m-1 | Applications | |
| Room | 1600℃ | |||||
| WCu7 | 17.3~17.8 | 400~750 | 50~120 | – | 1 | Nozzle, gas vane |
| WCu10 | 16.8~17.3 | 400~700 | 60~100 | – | Nozzle, gas vane | |
| WCu15 | 16.0~16.5 | 300~600 | – | Contacts, electrode, linear | ||
| WCu20 | 15.1~15.5 | – | 180~220 | 20 | Contacts, electrode | |
| WCu30 | 13.7~14.2 | 170~200 | 25 | Contacts, electrode | ||
| WCu40 | 12.7~13.2 | 140~160 | 29 | Contacts, electrode | ||
| WCu50 | 11.7~12.2 | 110~130 | 33 | Contacts, electrode | ||