Products CaF2(Fluorite)

Characteristic

  • The transmitted wavelength region ranges widely from vacuum ultraviolet to infrared.
  • The crystalline material shows a low dispersion rate and also anomalous dispersion. This material can be used to produce an apochromatic lens in combination with other optical materials.
  • The crystalline material is physically and chemically stable, and is resistant to water and chemicals.

Internal Transmittance

Physical Properties

Basic Physical Properties
Name of crystal material CaF2
Transmittance wavelength range(µm) 0.13~10
Color Colorless
Density (g/cc) 3.18
Melting point (℃) 1418
Solubility (g/100gH2O) (20℃) 0.00151
Molecular weight 78.08
Crystal system Cubic
Crystal structure Fluorite type
Cleavage plane {111}

Thermal Properties
Thermal Expansion
α (/℃)(20℃~60℃)
24×10-6
Thermal Conductivity
λ (cal/cm・sec・℃)
2.41×10-2
Specific Heat
Cp (cal/g・℃)
0.211

Mechanical Properties
Knoop Hardness Hk 158.3
Young’s Modulus
E (GPa)
75.8
Modulus of Rigidity
G (GPa)
33.77
Poisson Ratio 0.26

Application

Pamphlet Download(PDF)