TUNGSTEN COPPER - COPPER ALLOYS
Marketech International, Inc. offers a wide variety of Tungsten products including Tungsten Copper and Copper Alloys.
Description of Tungsten-Copper Alloys
As high performance materials, Tungsten-Copper and Molybdenum-Copper are characterized by high thermal conductivity, low thermal expansion and high wear resistance combined with excellent electrical conductivity. These composites are made by infiltrating porous tungsten or molybdenum with molten copper in a vacuum. Thus, providing a direct copper path for heat or electrical conductivity.
Tungsten-Copper for Electrical Applications
High Voltage Arc Contacts, Vacuum Contacts, Electrodes for Resistant Welding and Spark Erosion, Leaders for Steel Rolling, Dies for Casting, Balance Weights, Rocket Parts.
Alloys and Properties
| Type | Density(g/c3) | HB(MPa) | Electrical Conductivity (% IACS) | Form |
| WCu10 | 16.8-17.2 | > 2550 | > 27 | Rods, Bars Sheets, Plates, Parts |
| WCu20 | 15.2-15.6 | > 2160 | > 34 | |
| WCu25 | 14.5-15.0 | > 1940 | > 38 | |
| WCu30 | 13.8-14.4 | > 1720 | > 42 |
Tungsten-Copper for Heat Sink Applications
Heat Sinks and Spreaders, Microwave Carriers, Hermetic Package Bases and Housings, Ceramic Substrate Carriers, GaAs and Silicon Device Mounts, Laser Diode Mounts.
Alloys and Properties
| Properties | WCu10 | WCu15 | WCu20 | WCu25 |
| Density g/cm3 | 17.0 | 16.3 | 15.4 | 14.9 |
| CTE, ppm/K | 6.5 | 7.0 | 8.3 | 9.0 |
| Thermal conductivity W/m.K | 170-180 | 190-200 | 200-220 | 220-250 |
| Typical Size | |||
| Ground Finish Bars | Ground Finish Sheets | ||
| Diameter (mm) | Max. Length (mm) | Thickness (mm) | Max. Width x Max. Length (mm) |
| 4 - 8 | 175 | 1.2 | 20 x 80 |
| 10 - 50 | 203 | 3.3 | 30 x 150 |
| > 60 | 350 | 5 | 50 x 150 |
| - | - | 10 | 100 x 200 |
| - | - | 20 | 200 x 300 |
| - | - | 30 - 100 | 300 x 400 |
