Aluminum Nitride vs. CVD Diamond
Both aluminum nitride and CVD diamond are non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is aluminum nitride and the bottom bar is CVD diamond.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 330 | |
| 1050 |
| Fracture Toughness, MPa-m1/2 | 2.9 | |
| 5.5 |
| Poisson's Ratio | 0.21 to 0.31 | |
| 0.1 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 780 | |
| 500 |
| Thermal Conductivity, W/m-K | 80 to 190 | |
| 1900 |
| Thermal Expansion, µm/m-K | 4.2 to 5.4 | |
| 1.0 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 6.9 to 28 | |
| 5.7 |
| Electrical Dissipation At 1 MHz | 0.00020 to 0.0010 | |
| 0.00020 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 10 to 12 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.9 to 3.3 | |
| 3.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 55 to 63 | |
| 170 |
| Stiffness to Weight: Bending, points | 69 to 80 | |
| 96 |
| Thermal Diffusivity, mm2/s | 31 to 74 | |
| 1080 |