Potassium Bromide vs. Gallium Arsenide
Both potassium bromide and gallium arsenide are non-glass optical ceramics. There are 12 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 potassium bromide and the bottom bar is gallium arsenide.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 24 | |
85 |
Poisson's Ratio | 0.17 | |
0.31 |
Thermal Properties
Melting Onset (Solidus), °C | 730 | |
1400 |
Specific Heat Capacity, J/kg-K | 450 | |
360 |
Thermal Conductivity, W/m-K | 4.8 | |
47 |
Thermal Expansion, µm/m-K | 39 | |
5.6 |
Otherwise Unclassified Properties
Density, g/cm3 | 2.8 | |
5.3 |
Light Transmission Range, µm | 0.22 to 26 | |
1.0 to 16 |
Refractive Index | 1.8 | |
3.4 |
Common Calculations
Stiffness to Weight: Axial, points | 4.7 | |
8.9 |
Stiffness to Weight: Bending, points | 35 | |
28 |
Thermal Diffusivity, mm2/s | 3.9 | |
25 |