Cadmium Telluride vs. Gallium Arsenide
Both cadmium telluride and gallium arsenide are non-glass optical ceramics.
For each property being compared, the top bar is cadmium telluride and the bottom bar is gallium arsenide.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 45 | |
85 |
Knoop Hardness | 45 | |
750 |
Poisson's Ratio | 0.41 | |
0.31 |
Thermal Properties
Melting Onset (Solidus), °C | 1090 | |
1400 |
Specific Heat Capacity, J/kg-K | 210 | |
360 |
Thermal Conductivity, W/m-K | 5.0 | |
47 |
Thermal Expansion, µm/m-K | 5.9 | |
5.6 |
Otherwise Unclassified Properties
Density, g/cm3 | 5.9 | |
5.3 |
Light Transmission Range, µm | 1.0 to 25 | |
1.0 to 16 |
Refractive Index | 2.6 | |
3.4 |
Common Calculations
Stiffness to Weight: Axial, points | 4.3 | |
8.9 |
Stiffness to Weight: Bending, points | 20 | |
28 |
Thermal Diffusivity, mm2/s | 4.1 | |
25 |