Hexagonal Boron Nitride vs. Silicon Carbide
Both hexagonal boron nitride and silicon carbide are non-oxide engineering ceramics. There are 13 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 hexagonal boron nitride and the bottom bar is silicon carbide.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 21 to 250 | |
| 2780 to 3900 |
| Elastic (Young's, Tensile) Modulus, GPa | 14 to 60 | |
| 370 to 490 |
| Flexural Strength, MPa | 18 to 140 | |
| 410 to 600 |
| Poisson's Ratio | 0.11 | |
| 0.14 to 0.21 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 1030 to 2350 | |
| 500 to 1590 |
| Specific Heat Capacity, J/kg-K | 840 to 1610 | |
| 670 to 1180 |
| Thermal Conductivity, W/m-K | 29 to 96 | |
| 120 to 170 |
| Thermal Expansion, µm/m-K | 0.54 to 18 | |
| 4.0 to 4.5 |
Electrical Properties
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 13 to 15 | |
| 0.94 to 3.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.9 to 2.1 | |
| 3.0 to 3.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.1 to 18 | |
| 69 to 84 |
| Stiffness to Weight: Bending, points | 42 to 69 | |
| 79 to 82 |
| Thermal Diffusivity, mm2/s | 9.9 to 34 | |
| 38 to 79 |