Alumina 94% Alumina 99.5% Alumina 99.9% Zirconia Toughened Alumina Sapphire (single crystal) Alpha Alumina Oxide   Aluminum Nitride (AlN) Silicon Nitride - Hot Pressed (Si3N4) Sialon   Boron Carbide (B4C) Silicon Carbide - Reaction Bonded (SiC+Si+C) Silicon Carbide - Sintered (SiC) Silicon Carbide - CVD (SiC)® Tungsten Carbide

Corning Pyrex® 7740 Corning Glass ULE® Fused Quartz / Fused Silica (Synthetic)     ZERODUR® (SchottGlass) MACOR®  (Corning Glass)   Cubic Zirconia (ZrO2) Zirconia Toughened Alumina   Alumina Zirconia PSZ Zirconia TZP   Cordierite (2MgO-2AI2O3-5SiO2) Stealite (MgO-SiO2) Silicon (Si) Titanium Diboride (TiB2)