Tungsten Copper Contact Facts

What is contact?

Contact is a 1997 American science fiction drama film adapted from the Carl Sagan novel of the same name and directed by Robert Zemeckis. Both Sagan and wife Ann Druyan wrote the story outline for the film adaptation of contact.
Jodie Foster portrays the film's protagonist, Dr. Eleanor "Ellie" Arroway, a SETI scientist who finds strong evidence of extraterrestrial life and is chosen to make first contact. The film also stars Matthew McConaughey, James Woods, Tom Skerritt, William Fichtner, John Hurt, Angela Bassett, and David Morse.

Tungsten Copper Contact Facts

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.

Tungsten copper contacts facts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only tungsten copper materials will stand these high temperature & aberration.
Tungsten copper electrical contacts have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the tungsten copper with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten coppers facts are also used as arcing edges of selector switchblades in transformer tap changers.

The data sheet of tungsten copper contacts facts

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