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Alumina 94% - 97%


94% - 97% Al2O3

alumina 94-97% overview

94%-97% aluminas are used for rigorous applications that require excellent strength, hardness, corrosion resistance, and electrical resistivity. These properties enable reliable service in high-precision applications.

Example Applications

  • Automotive components


CoorsTek Formulations

Contact a CoorsTek expert to choose an Alumina 94% - 97% solution for your application

Property Units Value

Flexural Strength, MOR (20 °C)


280 - 370

Fracture Toughness, KIc

MPa m1/2

3.0 - 5.0

Thermal Conductivity (20 °C)

W/m K

15 - 27

Coefficient of Thermal Expansion

1 x 10-6/°C

7.5 - 9.1

Maximum Use Temperature


1200 - 1800

Dielectric Strength (6.35mm)


8.3 - 8.7

Dielectric Loss (tan δ)

1MHz, 25 °C

1 x 10-4 to 5 x 10-4

Volume Resistivity (25°C)


> 1014

The information provided on this chart is for general material property reference only.  The customer should recognize that exact properties of materials may vary according to product configuration but close control of values of most properties can be maintained, if specified. Nothing herein is provided, or is to be construed, as absolute engineering data or constituting a warranty or representation. Contact CoorsTek for cost-effective design, development and manufacturing assistance. CoorsTek has 300+ variations including various forming and firing processes, not all variants are represented in the present website.