Heat Spreader Properties
Chinatungsten offers special high conductivity and low thermal expansion metals and ceramic materials. All materials are available as finished components and in sheet form. Metals are available either as composites or as laminated sheets.
Tungsten/Copper - Moly/Copper - Cu/Mo/Cu Heat Sink Meterials
| Type | Materials | Density g/cm3 |
Thermal Conductivity W/m·k |
CTE, ppm/ºk 20-100℃ |
| Composite | W90Cu | 16.6-17.0 | 180-190 | 5.6-6.3 |
| W85Cu | 16.2-16.6 | 190-200 | 6.3-7.0 | |
| W80Cu | 15.4-15.8 | 200-220 | 7.8-8.5 | |
| W75Cu | 14.8-15.2 | 220-240 | 9.5-10.2 | |
| Mo70Cu | 9.6-9.8 | 190-200 | 7.8-8.4 | |
| Mo60Cu | 9.5-9.7 | 200-220 | 9.0-9.6 | |
| Mo50Cu | 9.3-9.5 | 220-250 | 10.1-10.7 | |
| Copper Metal Laminate | 1:1:1 Cu/Mo/Cu |
9.27-9.47 | 300-310(x-y) 220-230(z) |
9.6-10.0 |
| 1:2:1 Cu/Mo/Cu |
9.48-9.68 | 270-280(x-y) 200-210(z) |
8.5-8.9 | |
| 1:3:1 Cu/Mo/Cu |
9.6-9.8 | 240-250(x-y) 180-190(z) |
7.7-8.1 | |
| 1:4:1 Cu/Mo/Cu |
9.7-9.9 | 210-220(x-y) 170-180(z) |
6.8-7.2 | |
| 1:5:1 Cu/Mo/Cu |
9.74-9.94 | 195-200(x-y) 165-170(z) |
6.2-6.6 | |
| 13:74:13 Cu/Mo/Cu |
9.78-9.98 | 190-200(x-y) 160-170(z) |
5.7-6.1 | |
| 1:4:1 Cu/Mo70/Cu |
9.46 | 210-220(x-y) 170-180(z) |
7.2 |
Related Products:
The coefficient of thermal expansion (CTE) of the composite can be designed by controlling the content of tungsten, matching that of the materials, such as Ceramics (Al2O3, BeO), Semiconductors (Si), Metals (Kovar), etc.
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