Tungsten-Copper Composite (W15Cu)

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Description

WCu composites consist of a porous tungsten matrix infiltrated with approximately 10 - 40 percent by weight of copper. Tungsten-Copper is very resistant to arc erosion, exhibits good electrical conductivity, a high level of thermal conductivity and low thermal expansion.

This material data has been provided by Plansee.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyTemperatureValue

Density

23.0 °C

16.4 g/cm³

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

22.0 °C

7.3E-6 1/K

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Thermal conductivity

23.0 °C

215 W/(m·K)

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Chemical properties

PropertyValue

Copper

balance

Tungsten

15 %

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Technological properties

Property
Application areas

WCu is used for the construction of high-voltage circuit breakers (marketed under the name Elmet®) and for erosion electrodes (marketed under the name Sparkal®). WCu composites are also used as base plates and heat spreaders in radar technology, optoelectronics and high frequency electronics.