Alumina Ceramic – 99.65 % Crushable Mechanical, Thermal and Physical PropertiesMaterial Grade99.65% Crushable Alumina Oxide(S-669) ASTM: E1625-15Chemical AnalysisAL2O3, %99.65 minSiO2, %0.08 maxCaO, %0.08 maxFe2O3, %0.04 maxMgO, %0.08 max Mechanical PropertiesPorosity, %MIN 17Bulk Density, gm/cc2.20Flexural Strength, psi5,000-25,000Compressive Strength, psi7,000-30,000 Thermal PropertiesThermal Expansion 25O-700O inch/inch/O CX10-67.8Max Operating Temp., OC Download .pdf