3M Technical Ceramics
Zweigniederlassung der 3M Deutschland GmbH

Copper melts must be deoxidized shortly before casting, and the deoxidizing agent must not alter the physical properties of the alloy, particularly, its high electrical conductivity – one of the most chief properties of copper.


3M™ Calcium Hexaboride is the only material that does not reduce the electrical conductivity of copper, even when it is used in relatively large amounts. Deoxidation of the melt by calcium hexaboride (CaB6) is therefore part of the copper refining process. The calcium hexaboride (CaB6) powder in our range has a grain distribution that is ideal for copper melts: The defined decomposition rate of the powder removes all oxygen The reaction products collect in the slag The powder can be introduced into the melt either loose or in sacrificial containers