MakeItFrom.com
Menu (ESC)

Cesium Iodide vs. Calcium Fluoride

Both cesium iodide and calcium fluoride are non-glass optical ceramics.

For each property being compared, the top bar is cesium iodide and the bottom bar is calcium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 4.0
80
Knoop Hardness 20
160
Poisson's Ratio 0.21
0.26
Shear Modulus, GPa 6.2
34

Thermal Properties

Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 200
860
Thermal Conductivity, W/m-K 1.1
9.7
Thermal Expansion, µm/m-K 48
19

Otherwise Unclassified Properties

Density, g/cm3 4.5
3.2
Light Transmission Range, µm 0.25 to 55
0.15 to 9.0
Refractive Index 1.9
1.4

Common Calculations

Stiffness to Weight: Axial, points 0.49
14
Stiffness to Weight: Bending, points 12
45
Thermal Diffusivity, mm2/s 1.2
3.5