Tungsten copper alloy, also known as copper tungsten alloy or WCu alloy, is a composite material composed of tungsten (W) and copper (Cu). Offer Tungsten copper alloy plate rod bar with various size and type. Good Thermal & Electrical Conductivity. Perfect for electrical and electronic applications,Electrical contacts, electrodes for resistance welding and electrical discharge machining (EDM), heat sinks, and microwave components.