Beryllium Copper Round Bar MoldMAX HH® is normally used for molds, electrical, industrial, machine parts, military, tool, and natural gas/petroleum/oil applications. MoldMax was specifically engineered for use in injection mold cores and cavities and blow mold pinch-offs. Moldmax beryllium copper round bar has a hardness and strength comparable with standard tool steels but its thermal conductivity is four to six times higher. MoldMAX is a trademark of Materion Corporation.