Potassium Bromide vs. Aluminum Nitride
Potassium bromide belongs to the non-glass optical ceramics classification, while aluminum nitride belongs to the non-oxide engineering ceramics. There are 11 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 potassium bromide and the bottom bar is aluminum nitride.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 24 | |
| 330 |
| Poisson's Ratio | 0.17 | |
| 0.21 to 0.31 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 450 | |
| 780 |
| Thermal Conductivity, W/m-K | 4.8 | |
| 80 to 190 |
| Thermal Expansion, µm/m-K | 39 | |
| 4.2 to 5.4 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 4.9 | |
| 6.9 to 28 |
| Electrical Dissipation At 1 MHz | 0.00020 | |
| 0.00020 to 0.0010 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.8 | |
| 2.9 to 3.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 4.7 | |
| 55 to 63 |
| Stiffness to Weight: Bending, points | 35 | |
| 69 to 80 |
| Thermal Diffusivity, mm2/s | 3.9 | |
| 31 to 74 |