Alumina 98% - 99.8%
Composition
98% - 99.8% Al2O3
Alumina 98-99.8% overview
High purity 98%-99.8% aluminas are used for applications requiring excellent mechanical properties and a high-purity composition in order to minimize contamination.
Example Applications
- Semiconductor wafer fabrication components
- Precision measurement components
CoorsTek Formulations
Contact a CoorsTek expert to choose an Alumina 98% - 99.8% solution for your application.
| Property | Units | Value |
|---|---|---|
Flexural Strength, MOR (20 °C) |
MPa |
300 - 550 |
Fracture Toughness, KIc |
MPa m1/2 |
4.0-5.0 |
Thermal Conductivity (20 °C) |
W/m K |
18.0 - 37.1 |
Coefficient of Thermal Expansion |
1 x 10-6/°C |
8.2 - 9.0 |
Maximum Use Temperature |
°C |
1400 - 1800 |
Dielectric Strength (6.35mm) |
ac-kV/mm |
8.7 - 19.7 |
Dielectric Loss (tan δ) |
1MHz, 25 °C |
1 x 10-4 to 4 x 10-4 |
Volume Resistivity (25°C) |
Ω-cm |
> 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.
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