industrial ceramic parts

Serial numberperformance indexMeasuring unitHigh purity aluminaAluminaHigh alumina1Al2O3%99.799.3852SiO2%less than0.1——3Densityg/cm33.953.883.24Wter absorption%00.010.25Cld compressive strengthMPa450350200620 degree Celsius leak ratesTorr/L.secless than10-11less than10-11less than10-117Twisting in high temperaturemm1700 degree Celsius 0.2 allowance1600 degree Celsius 0.2 allowance1400 degree Celsius 0.2 allowance8Bonding in high temperature1700 degree Celsius non-caked1600 degree Celsius non-caked1400 degree Celsius non-caked920—1000 degree Celsius coefficient ofthermal expansionmm.10-6/degree Celsius.m8.68.28.210Thermal conductivityW/m.k25252511Electric insulation strengthKV/mm2020151220 degree Celsius direct currentinsulating resistanceOhm/cm10141014101413High-temperatureinsulation resistance1000 degree Celsius MΩ≥0.08≥0.08≥0.081300 degree Celsius MΩ≥0.02≥0.02≥0.0214Thermal shock resistance1550 degree Celsius 6 times not cracked1550 degree Celsius 6 times not cracked1300 degree Celsius 3 times not cracked15Maximum service temperaturedegree Celsius190018001400