Alumina vs. Zircon
Both alumina and zircon are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is alumina and the bottom bar is zircon.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 3.4 to 4.1 | |
| 3.9 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 7.8 to 11 | |
| 8.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 8.9 to 12 | |
| 7.9 |
| Flexural Strength, MPa | 260 to 430 | |
| 450 |
| Maximum Temperature: Mechanical, °C | 650 to 1730 | |
| 1650 |
| Strength to Weight: Axial, points | 14 to 23 | |
| 21 |
| Strength to Weight: Bending, points | 19 to 28 | |
| 25 |
| Tensile Strength: Ultimate (UTS), MPa | 210 to 290 | |
| 290 |
| Thermal Conductivity, W/m-K | 14 to 30 | |
| 3.5 |
| Thermal Expansion, µm/m-K | 6.7 to 8.2 | |
| 5.0 |