High Quality Beryllium Copper CuNi2Be Brass C17510 Copper Sheet/Plate for Decoration Product Description Sylaith presents its high-quality Beryllium Copper C17510 (UNS C17510) , a copper-nickel-beryllium alloy renowned for its exceptional combination of high strength, excellent electrical conductivity, and outstanding thermal properties. This age-hardenable alloy is supplied in sheet and plate forms, making it the ideal material for demanding applications in the molding,