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www.lihao-china.com PRIOR   NEXT     Ceramic   The Physical and Chemical Index of Ceramics(99%) Rings and Cermet Rings   AL2O3 Ceramics(99%) Index Al2O3+Fe Cermet Index AL2O3 Ceramics(99%) Index AL2O3+Fe Cermet Index Content of AL2O3 and Mgo>=% 99.5 Content of AL2O3 % 85 Hardness(HRA) 90 Hardness(HRA) 87 Content of MgO<=% 0.5 Content of Fe and MgO=% 15 Porosity Rate% 0.5 Porosity Rate % 0.5 Bending Strength Kg/cm2 3000 Bending Strength Kg/cm2 3200 Coeffcient of Heat Expansion(10-6/oC) 5.3 Coefficient of Heat Expansion(10-7/oC) 5.6 Density g/cm3 3.9 Density g/cm3 4 Thermal Conductivity(W/M.K) 26.7 Thermal Conductivity(W/M.k) 28 Copyright © 2003-2004 Ningbo Tight Mechanical Seal Co., Ltd.