Beryllium Copper Mold And Die. The beryllium copper mold adds points to the cavity core, instead of completely using beryllium copper as the mold, adding beryllium copper to the core cavity can make the cooling faster. Molds, various molds and tools used in industrial production to obtain desired products by injection molding, blow molding, extrusion, die-casting or forging molding, smelting, and stamping