This refractory metal composite materials are a combination of tungsten combined with copper or silver. The manufacturing process is to press the refractory, sinter the pressed compact at a high temperature, and infiltrate with copper or silver. All this is done under very closely controlled conditions. The result is a relatively hard materials with superior arc and wear resistance, high physical properties at elevated temperatures, and good electrical and thermal conductivity.

Advantages

• Higer thermal conductivity
• Low thermal expansion
• High arc resistance combined with good electrical conductivity

Applications

• Electrodes for resistance welding
• Heat sinks as passive cooling elements of electronic devices
• Electrodes in electric spark erosion cutting machines
• Arcing contacts and vacuum contacts in high and medium voltage breakers or vacuum interruptions

Copper Tungsten Technical Data