Beryllides of cobalt and nickel have metallurgical importance as the precipitated phase in beryllium copper alloys. These materials are nonsparking, which allows them to be used in certain hazardous environments.
In nuclear technology, beryllides are investigated as neutron multipliers.  Unlike metallic Be, materials such as BeTi are more resistant to oxidation by water but retain the neutron-multiplying properties of the predominant isotope Be.