WCu composites are offered with 10-40wt% Cu
Advantages:
High arc resistance combined with good electdcal conductivity
High thermal conductiveity
Low thermal expansion
Applications:
Arcing contacts and vaccum contacts in high and medium voltage breakers or
vaccum interruptors
Electrodes in electric spark erosion cutting machines
Heat sinks as passive cooling elements of electronic devices
Electrodes for Resistance Welding