Barium Fluoride vs. Soda-lime Glass
Barium fluoride belongs to the non-glass optical ceramics classification, while soda-lime glass belongs to the glass and glass-ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is barium fluoride and the bottom bar is soda-lime glass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 60 | |
| 70 to 71 |
| Knoop Hardness | 80 | |
| 570 |
| Poisson's Ratio | 0.32 | |
| 0.23 |
| Shear Modulus, GPa | 25 | |
| 29 |
Thermal Properties
| Specific Heat Capacity, J/kg-K | 420 | |
| 720 to 800 |
| Thermal Conductivity, W/m-K | 9.0 | |
| 1.0 to 1.1 |
| Thermal Expansion, µm/m-K | 18 | |
| 8.8 to 9.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 4.9 | |
| 2.4 |
| Light Transmission Range, µm | 0.15 to 13 | |
| 0.35 to 2.5 |
| Refractive Index | 1.6 | |
| 1.5 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.8 | |
| 16 |
| Stiffness to Weight: Bending, points | 27 | |
| 56 |
| Thermal Diffusivity, mm2/s | 4.4 | |
| 0.51 to 0.6 |