* High mechanical strength
* Excellent wear resistance
* Excellent corrosion resistance
* Low dielectric constant


* Wear resistant inserts
* Insulating washers or bushings
* Semiconductor components
* Aerospace components
* Automotive sensors
* Electrical or electronic insulators
AL2O3% | 60 | 75 | 80 | 85 | 92 | 95 | 99 | 99.7 |
Bulk Density (g/cm3) | 3.0 | 3.1 | 3.3 | 3.4 | 3.6 | 3.7 | 3.81 | 3.91 |
Flexural strength (MPa) | 205 | 280 | 215.7 | 230 | 312 | 304 | 340 | 370 |
Linear expansion coefficient (×10-6/C)(25-800C) | 7.1 | 7.6 | 7.6 | 7.6 | 7.5 | 7.3 | 7.6 | 7.6 |
Thermal conductivity [w/(m.R)] | 16 | 17 | 17 | 17 | 18 | 20 | 34 | 35 |
Dielectric strength (KV/mm) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Volume resistivity (Ω.cm) 20C | >1014 | >1014 | >10 14 | >1014 | >1014 | >1014 | >1014 | >1014 |
300C | >1013 | >1013 | >10 13 | >1013 | >1013 | >1012 | >1010 | >1010 |
Max C | 1350 | 1100 | 1300 | 1350 | 1500 | 1600 | 1700 | 1800 |
Moh's hardness | 7.5 | 7.5 | 7.5 | 7.5 | 8.5 | 8.8 | 9 | 9 |
Refractoriness | 1800 | 1700 | 1800 | 1850 | 1920 | 2000 | 2030 | 2040 |











