Ceramic Alumina Specifications

Aluminum Oxide Ceramic is high purity 99.8% aluminum oxide (alumina) ceramic.

Maximum wear resistance and corrosion resistance.

High density, diamond like hardness, fine grain structure and superior mechanical strength.

The material of choice for a wide range of demanding applications.

Alumina Ceramic in 99.95% alumina is also available.

Technical Data Ceramic Alumina
PropertiesUnitsValue
Compositionwt%99.8% Alumina
Color White
Bulk Densityg/cm33.93
Water Absorption%0
Gas Permeation%0
Grain SizeMicrons4
Hardness (Vickers)HV2017
Flexural strengthMPa (psi – 103)382 (55)
Modulus of ElasticityGPa (psi – 106)393 (57)
Fracture ToughnessMPa – m1/25
Poisson’s Ratio–0.22
Thermal Expansion (25°C – 1000°C)10-6/°C (10-6/°F)8.2 (4.6)
Thermal ConductivityBtu – in/ft2  h – °F260
Specific HeatCal/g – °C0.21
Maximum Temperature Use (no load)°C [° F]1700 ° [3092 °]
Dielectric StrengthAC – volts / mils230
Dielectric Constant 9.7

Ceramic Y-TZP Specifications

Y-TZP Yttria Tetragonal Zirconia Polycrystal is 95% zirconia, 5% yttria

Features high strength and toughness for use in severe structural applications.

Resistant to wear, corrosion, abrasion and impact.

Technical Data Ceramic Y-TZP
PropertiesUnitsValue
Compositionwt%95% zirconia, 5% yttria
Color Ivory or White 
Bulk Densityg/cm36.01
Water Absorption%0
Gas Permeation%0
Grain SizeMicrons0.5
Hardness (Vickers)HV1290
Flexural strengthMPa (kpsi)1000 (145)
Modulus of ElasticityGPa (psi – 106)204 (30)
Fracture ToughnessMPa – m1/27
Poisson’s Ratio–0.31
Thermal Expansion (25°C – 1000°C)10-6/°C (10-6/°F)10.3 (5.8)
Thermal ConductivityBtu – in/ft215
Specific HeatCal/g – °C0.32
Maximum Temperature Use (no load)°C [° F]2400 ° [4350 °]