Tungsten Copper

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Tungsten-based composites (tungsten copper & tungsten silver) are strong refractory metal materials manufactured by a strictly controlled process involving pressing, sintering, and infiltrating with copper or silver. They are highly resistant to heat, electric arc, wear, and deformation at high-temperature welding, flash butt, and spot welding. They also have excellent electrical and thermal conductivity. The properties of tungsten composites are related to the copper/silver-to-tungsten ratio. If the Tungsten content improves, the electric arc and wear resistance will increase while the thermal and electrical conductivity, on the contrary, reduce. Due to their unique properties, they are widely used where the combination of good electrical and/or thermal conductivity and low thermal deformation is necessary, for example:

• Electrical contacts
• Heat sinks
• Electrodes for EDM and ECM

Here are the specific properties and usage for each grade of tungsten copper composites

CuW50 and CuW55, these composites have the lowest Tungsten contents. They are both good switching and contact materials for oil-filled devices. CuW55 is also used for arcing contacts in oil circuit breakers and arcing edges of selectors and switchblades in transformer tap changers.

CuW65 and CuW70, composites are used as contact materials in severe arcing applications, including gas, oil, and some air circuit breakers. They are also used for arcing edges on selectors and reversing switchblades.

CuW75 and CuW80, these composites are used as contact materials under extreme arcing conditions. Applications include arcing contacts in gas and oil circuit breakers, contacts and transformer tap changers, arcing plates, and arc runners in power switching equipment.

CuW85 and CuW90, these composites have the highest Tungsten content. They are used as contact materials where resistance to contact welding, sticking and arc erosion are critical. They also provide satisfactory heat and current interruption capabilities. Typical applications are power vacuum switches and high-power spark gap electrodes, etc.

• Tungsten Copper
• CuW Composite Block

Properties for our tungsten copper products

Specifications for our tungsten copper products

Tungsten Copper Alloy Applications

Tungsten copper heat sinks are used in a wide variety of applications due to their excellent thermal conductivity and durability. These applications include:

Thermal mounting plates for effective heat dissipation.

Chip carriers for reliable component support.

Flanges and frames in RF and microwave packaging.

Laser diode packages and complex carriers for optoelectronic devices such as amplifiers, receivers, transmitters and tunable lasers.

In addition, tungsten copper can be used in other high-performance fields, such as:

Aerospace materials for stable performance in harsh environments.

Vacuum contact materials and electrodes for electrical discharge machining (EDM).

Arc contacts and vacuum contacts in high-voltage and medium-voltage circuit breakers or vacuum interrupters.

Heat sink materials and electrodes for resistance welding.

Electronic packaging materials to ensure efficient thermal management and reliability.

• Tungsten Copper
• Tungsten Carbide Copper

Related tungsten composites products

Tungsten Carbide Copper

Tungsten Silver

Molybdenum Copper