... density , long performance life; Made of Zirconia, formally Y-TZP ( Yttrium Stabilised Tetragonal Zirconia Polycrystal MaterialY-TZP has fine grain size ... finish.Applications: rod, tube, disc, plate, die, tool, , milling ball, nozzle, valve, pillar, and cutter etc.Main property:Density (g ... ( HRA) >90Fracture toughness (MPa.m1/2) 8Custom products available.ceramic machinery parts. zirconia ceramic