Calcium Fluoride vs. Machinable Glass-ceramic
Calcium fluoride belongs to the non-glass optical ceramics classification, while machinable 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 (17, in this case) are not shown.
For each property being compared, the top bar is calcium fluoride and the bottom bar is machinable glass-ceramic.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 80 | |
| 67 |
| Knoop Hardness | 160 | |
| 250 |
| Poisson's Ratio | 0.26 | |
| 0.29 |
| Shear Modulus, GPa | 34 | |
| 26 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 860 | |
| 790 |
| Thermal Conductivity, W/m-K | 9.7 | |
| 1.2 |
| Thermal Expansion, µm/m-K | 19 | |
| 21 |
Otherwise Unclassified Properties
| Density, g/cm3 | 3.2 | |
| 2.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 45 | |
| 51 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 0.56 |