Zinc Sulfide vs. Low Expansion Glass-ceramic
Zinc sulfide belongs to the non-glass optical ceramics classification, while low expansion glass-ceramic belongs to the glass and glass-ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is zinc sulfide and the bottom bar is low expansion glass-ceramic.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 75 | |
| 83 |
| Poisson's Ratio | 0.28 | |
| 0.22 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 520 | |
| 800 |
| Thermal Conductivity, W/m-K | 27 | |
| 1.5 |
| Thermal Expansion, µm/m-K | 6.5 | |
| 1.7 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.1 | |
| 2.4 |
| Light Transmission Range, µm | 0.37 to 14 | |
| 0.5 to 2.7 |
| Refractive Index | 2.3 | |
| 1.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 10 | |
| 19 |
| Stiffness to Weight: Bending, points | 34 | |
| 59 |
| Thermal Diffusivity, mm2/s | 13 | |
| 0.76 |