Consisting of pure tungsten (W) powder suspended in a matrix of copper (Cu), copper tungstent alloy are known for good thermal and electrical conductivity, low thermal expansion, and resistance to erosion from arcing. Thus, they are often used as electrical contacts, particularly in high voltage applications. Most sizes and shapes can be supplied with short lead times.
Advantages:
High arc resistance combined with good electrical conductivity
High thermal conductivity
Low thermal expansion
Applications:
Arc contacts and vacuum contacts in high/medium voltage breakers or vacuum interruptors
Electrodes in electric spark erosion (EDM) cutting machines
Heat sinks for passive cooling of electronic devices
Electrodes for resistance welding
