Calcium Fluoride


Widespread IR and near UV application as spectroscopic windows, prisms and lenses. Useful application in the UV as Eximer laser windows.


Absorption Coefficient (cm-1): 7.8x10-4 at 2.7µ
Apparent Elastic Limit (MPa): 36.54
Bulk Modulus (K) (GPa): 82.71
Cleavage Planes: (111)
Density ( 3.18
Dielectric Constant: 6.76 at 1MHz
Elastic Coefficient C11: 164
Elastic Coefficient C12: 53
Elastic Coefficient C44: 33.7
Hardness (knoop): 158.3
Melting Point (K): 1633
Poisson Ratio: 0.26
Reflection Loss (%): 5.4 at 5µ
Refractive Index: 1.40 at 0.5µ
Restrahlen Peak (µ): 35
Shear Modulus (G) (GPa): 33.77
Solubility (g/100g H2O): 0.0017 at 293K
Specific Heat Capacity (J·kg·m-1·K-1): 854
Stability: Stable
Structure: Cubic
Thermal Conductivity (W·m-1·K-1): 9.71
Youngs Modulus (E) (GPa): 75.8
Thermal Expansion (K-1 at 300K): 18.9
Transmission Range (µ): 0.13-10.0