Synthetic Sapphire vs. Wollastonite
Both synthetic sapphire and wollastonite are oxide-based engineering ceramics. There are 7 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is synthetic sapphire and the bottom bar is wollastonite.
Metric UnitsUS Customary Units
Material Properties
| Compressive (Crushing) Strength, MPa | 2700 | |
| 260 |
| Density, g/cm3 | 4.0 | |
| 2.8 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 10 | |
| 3.5 |
| Dielectric Strength (Breakdown Potential), kV/mm | 9.9 | |
| 6.0 |
| Flexural Strength, MPa | 1090 | |
| 100 |
| Maximum Temperature: Mechanical, °C | 2000 | |
| 1200 |
| Thermal Conductivity, W/m-K | 30 | |
| 0.8 |