Hexagonal Boron Nitride vs. Grade A Lava
Hexagonal boron nitride belongs to the non-oxide engineering ceramics classification, while grade A lava belongs to the oxide-based engineering ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is hexagonal boron nitride and the bottom bar is grade A lava.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 21 to 250 | |
| 76 to 170 |
| Flexural Strength, MPa | 18 to 140 | |
| 28 to 69 |
Thermal Properties
| Maximum Temperature: Corrosion, °C | 1140 to 2800 | |
| 1150 |
| Maximum Temperature: Mechanical, °C | 1030 to 2350 | |
| 650 to 1130 |
| Specific Heat Capacity, J/kg-K | 840 to 1610 | |
| 840 |
| Thermal Conductivity, W/m-K | 29 to 96 | |
| 2.0 |
| Thermal Expansion, µm/m-K | 0.54 to 18 | |
| 2.5 to 3.3 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 4.0 to 4.4 | |
| 5.3 to 5.8 |
| Dielectric Strength (Breakdown Potential), kV/mm | 61 to 200 | |
| 3.2 to 3.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.9 to 2.1 | |
| 2.3 to 2.5 |
Common Calculations
| Thermal Diffusivity, mm2/s | 9.9 to 34 | |
| 1.0 |