Copper Cobalt (CuCo) Master Alloy

The Copper-Cobalt master alloys are mainly used in the production of precipitation hardening CuCoBe alloys, which combine excellent electrical and thermal conductivity.

These are used, for example, in the manufacturing of resistance welding electrodes. The master alloy dissolves much more easily into the molten copper than pure Co.

CuCo is also used in cobalt based super alloys to deoxidize the melt and to improve their strength at elevated temperatures. Furthermore, CuCo finds application in the production of cobalt containing aluminium bronzes.


The following table provides details relating to copper-cobalt master alloys:

Alloy Composition
CuCo10 10% Co balance Cu
CuCo15 15% Co balance Cu
CuCo20 20% Co balance Cu
CuCo50 50% Co balance Cu

This information has been sourced, reviewed and adapted from materials provided by KBM Affilips.

For more information on this source, please visit KBM Affilips.


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