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. They excel in these applications because they withstand the effects of the arcing incident to the interruptions of large current.
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.
Tungsten has the highest strength & melting temperature of the refractory metals. This is the principal factor determining the contacts resistance to arc erosion & mechanical wear. The strength, erosion & weld characteristics of the contact increase with increasing tungsten content, however the electrical & thermal characteristics decrease with the increasing refractory content.
Mipalloy engineering assistance is available on request. 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.
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