What materials does Belvac use in necking dies and knock-outs?

Belvac uses HIPped Yttria Tetragonal Zirconia Polycrystal (YTZP Ceramic) for demanding necking dies and knock-out tooling. Manufactured in-house with a proprietary powder formula, YTZP Ceramic delivers superior corrosion/abrasion resistance, extreme toughness, and longer tool life than traditional metals.