Hexagonal Boron Nitride vs. Aluminum Nitride
Both hexagonal boron nitride and aluminum nitride are non-oxide engineering ceramics. There are 17 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is hexagonal boron nitride and the bottom bar is aluminum nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 21 to 250 | |
| 2100 |
| Elastic (Young's, Tensile) Modulus, GPa | 14 to 60 | |
| 330 |
| Flexural Strength, MPa | 18 to 140 | |
| 190 to 400 |
| Poisson's Ratio | 0.11 | |
| 0.21 to 0.31 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 1030 to 2350 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 840 to 1610 | |
| 780 |
| Thermal Conductivity, W/m-K | 29 to 96 | |
| 80 to 190 |
| Thermal Expansion, µm/m-K | 0.54 to 18 | |
| 4.2 to 5.4 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 4.0 to 4.4 | |
| 6.9 to 28 |
| Dielectric Strength (Breakdown Potential), kV/mm | 61 to 200 | |
| 15 to 56 |
| Electrical Dissipation At 1 Hz | 0.0017 | |
| 0.0019 |
| Electrical Dissipation At 1 MHz | 0.00075 to 0.0018 | |
| 0.00020 to 0.0010 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 13 to 15 | |
| 10 to 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.9 to 2.1 | |
| 2.9 to 3.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 to 18 | |
| 55 to 63 |
| Stiffness to Weight: Bending, points | 42 to 69 | |
| 69 to 80 |
| Thermal Diffusivity, mm2/s | 9.9 to 34 | |
| 31 to 74 |