Copper-Tungsten is a contact material used as electrodes or for high power switching in medium and high voltage. The properties of Cu/W materials are similar to the properties of Ag/W. Nonetheless, although the cost of Cu/W is much lower than the cost of Ag/W, it cannot be used as a replacement, because, unlike the silver oxides, the copper oxides are very stable in high temperatures and drastically impact the contact resistance. Therefore, Cu/W are normally used in applications where the contact tip is protected against oxidation.

Copper-Tungsten is supplied by HP in the shape of contact tips and can also be machined into complex shapes. The typical properties are the following:

* This table shows typical material properties. The real contact properties will depend on the shape and production route.

If you have different requirements, SK Impex has a team of materials engineers, specialized in the development of contact materials, that will study your necessities.