• 99 Alumina Ceramics

Name:99 Alumina Ceramics
produce brand:ROCKMAN
Produce matrials:99 alumina ceramiacs
produce performance:wear resistance、high temperature、tenacity
machining precision:±0.001mm
provide colour:teiga
customization:according drawing or sample

Product Description


Main component99%Al2O3S-SiCZrO2Si3N4TC
Physical PropertyDensityg/cm33.93.163.214.55
Water Absorption%00.100.1
Sinter Temperature°C1700220015001800
Mechanical PropertyRockwell HardnessHV1700220013001400
Bend Strengthkgf/mm235004000900070007000
Compression IntensityKgf/mm23000020000200002300023000
Thermal PropertyMaximum working   temperature°C15001600130014001400
thermal expansion coefficient  0-1000°C/°C8.0*10-64.1*10-6(0-500°C)9.5*10-62.0*10-6(0-500°C)2.0*10-6(0-500°C)
5.2*10-6(500-1000°C)4.0*10-6(500-1000°C)4.0*10-6(500-1000°C)
Thermal Shock resistanceT(°C)200250300400-500400-500
Thermal ConductivityW/m.k(25°C3110032525
          300°C)1610032525
Electrical  PropertyResisting rate of   Volume◎.cm




20°C>1012106-108>1010>1011>1011
100°C1012-1013>1011>1011
300°C>1012>1011>1011
Insulation Breakdown IntensityKV/mm18semiconductor917.717.7
Dielectric Constant (1 MHz)(E)102977
Dielectric Dissipation(tg o)0.4*10-3



IndustryApplication   EnvironmentApplicationsQualities
PetrochemicalHigh-TemperatureBearingsWear Resistant
High PressureMechanical Seals   BearingsCorrosion Resistant
CorrosiveValve PlatesThermal Shock   Resistant
AbrasionBall ValvesHigh Strength

NozzlesAir Impermeability

Pipeline Lining

Thermocouple   Protection Tube
DefenseArmorArmor PlatingHighly Bulletproof
Lightweight
TextileGrindingFriction SliceWear Resistant
High-temperatureMoldsThermal Shock   Resistant
High Speed
High Strength
Water HardwareGrindingWater FaucetWear Resistant
Metallurgyhigh temperature 
high temperature


Other IndustriesInsulationVoltage InsulatorHighly-Insulated
High Pressure InsulationInsulator Protector
High Temperature InsulationInsulator Subsidies



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