99.9 Alumina (Al₂O₃)

Alumina ceramic of 99.9% Al2O3 content. A high purity material used for the highest integrity applications where one, or a combination, of its exceptional mechanical, electrical, thermal or corrosion resistant properties is essential.

INNOVACERA can not supply this material, the data from Kyocera Group.

Property

Value

General

Chemical Formula

99.9 Al2O3

Mechanical

Density

3.9 gm/cc

Hardness

17.2 GPa

Modulus of Elasticity

380 GPa

Flexural Strength

380 MPa

Compressive Strength

2450 MPa

Poisson's Ratio

0.23

Fracture Toughness

4 MPa m½

Electrical

Dielectric Strength

15 ac V/mm

Dielectric Constant

9.9 (@ 1 MHz)

Volume Resistivity

10^14 ohm-cm

Thermal

Coefficient of Thermal Expansion

7.2 x 10^-6/°C

Thermal Conductivity

37 W/(m*K)

Specific Heat

0.78 x10^3 J/(Kg*K)

Shock Resistance

250 °C Diff.

Maximum Working Temperature

1700 °C

Optical

Index of Refraction

Birefringence

Transmission Band

All properties are at room temperature unless otherwise noted.

Engineering data are representative, and are not intended as absolute nor warrantable. Manufacturer’s Data shown is blended from multiple sources and therefore illustrates the marketplace.