Silicon Nitride vs. Grade A Lava
Silicon nitride belongs to the non-oxide engineering ceramics classification, while grade A lava belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is silicon nitride and the bottom bar is grade A lava.
Metric UnitsUS Customary Units
Material Properties
| Compressive (Crushing) Strength, MPa | 600 to 2950 | |
| 76 to 170 |
| Density, g/cm3 | 2.2 to 3.4 | |
| 2.3 to 2.5 |
| Dielectric Constant (Relative Permittivity) At 1 MHz | 8.0 to 10 | |
| 5.3 to 5.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 18 | |
| 3.2 to 3.9 |
| Flexural Strength, MPa | 130 to 810 | |
| 28 to 69 |
| Maximum Temperature: Mechanical, °C | 1000 to 1330 | |
| 650 to 1130 |
| Specific Heat Capacity, J/kg-K | 720 to 800 | |
| 840 |
| Thermal Conductivity, W/m-K | 12 to 31 | |
| 2.0 |
| Thermal Diffusivity, mm2/s | 7.5 to 13 | |
| 1.0 |
| Thermal Expansion, µm/m-K | 2.5 to 3.2 | |
| 2.5 to 3.3 |