Features: 1) Material: 99% Al2O3 (alumina) 2) Density: 3.8g/cm 3) Hardness: HRA 88 4) Bending strength: >350MPa 5) Compressive strength: >3,900MPa 6) Fracture toughness: 3.0-4.0MPam 1/2 7) Thermal conductivity: 30W/mk 8) Young's modulus: 380GPa 9) Maximum using temperature: 1,800 deg.C 10) Dimensions: O.D. 15-160mm, height 15-300mm, thickness>3mm 11) Available in various types: round bottom, curve, square, cylindrical 12) Designed for high temperature fusion and incineration in an oven or furnace, made from glazed ceramic material.