Copper tungsten electrical contacts

The high Electrical & thermal conductivity of copper are combined with the arc-resistant & non-welding properties of tungsten or their carbides to form an extensive series of compositions each designed to give the best performance for your particular application. These materials are used for such heavy duty contact applications as:
*Circuit breakers, air & oil immersed
*Arcing tips or arc runners
*Make & break contacts
*Heavy duty conductors, relays & switches.

Copper tungsten product standard: GB/T 8320-2003

The high electrical and thermal conductivity of tungsten copper alloy allows a cool, effective transfer of power, while the excellent arc-resistance properties of tungsten copper minimize arc erosion and transfer problems. These characteristics can be varied by composition more silver or copper yields higher electrical and thermal conductivity, while a higher refractory metal content results in superior arc erosion properties. We offer a variety of composites to meet your demands. Regardless of the environment (oil-filled devices, air and gas circuit breakers, contactors, high voltage switch gear) or the application (arcing contacts and plates, arc runners, current carrying members and blade facings), you won't be disappointed in electrical contacts made from our copper tungsten composites.

The data sheet of tungsten copper electrical contacts

grade	Composition	Density g/cm	Hardness	Electrical Conductivity % IACS	Application
CuW60	60% Tungsten	13.0	145 HV	52	Arcing Contact
CuW70	70% Tungsten	14.2	197 HV	46	Arcing Contact Vacuum Switch
CuW72	72% Tungsten	14.5	200 HV	40	Spark Erosion & Electro Chemical Machining
CuW75	75% Tungsten	14.8	220 HV	44	Arcing Contact
CuW75	75%Tungsten	15.2	240 HV	40	Projection Welding
CuW78	78% Tungsten	15.2	230 HV	40	Arc Contact resistance welding
CuW80	80% Tungsten	15.5	235 HV	40	Arcing Contact
CuWC67	67% Tungsten Carbide	12.7	350 HV	32	Electrical Upsetting

We will analyze your application & recommend sintered materials to suit your requirements. We can often suggest design revisions that may improve the performance of the product & reduce your costs. From simple to complex geometry, CTIA E-biz Center produces custom electrical contacts that meet the demands of customer applications. A variety of shapes and sizes for tungsten copper electrical contacts requirements are possible because of powder metal technology.

Copper tungsten electrical contacts