Infrared Transmitting Glass vs. Beryllia
Infrared transmitting glass belongs to the glass and glass-ceramics classification, while beryllia belongs to the oxide-based engineering ceramics. There are 10 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 infrared transmitting glass and the bottom bar is beryllia.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 4.4 to 4.8 | |
| 2.9 |
| Elastic (Young's, Tensile) Modulus, GPa | 18 to 63 | |
| 350 |
| Flexural Strength, MPa | 20 to 79 | |
| 240 |
| Poisson's Ratio | 0.28 to 0.3 | |
| 0.26 |
| Specific Heat Capacity, J/kg-K | 360 to 430 | |
| 1050 |
| Stiffness to Weight: Axial, points | 2.3 to 7.3 | |
| 67 |
| Stiffness to Weight: Bending, points | 20 to 28 | |
| 82 |
| Thermal Conductivity, W/m-K | 0.0060 to 0.23 | |
| 270 |
| Thermal Diffusivity, mm2/s | 0.0029 to 0.14 | |
| 89 |
| Thermal Expansion, µm/m-K | 9.0 to 17 | |
| 8.0 |