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Calcium Fluoride vs. Boron Carbide

Calcium fluoride belongs to the non-glass optical ceramics classification, while boron carbide belongs to the non-oxide engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is calcium fluoride and the bottom bar is boron carbide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.2
2.1 to 2.7
Elastic (Young's, Tensile) Modulus, GPa 80
240 to 460
Knoop Hardness 160
2600 to 3200
Poisson's Ratio 0.26
0.17 to 0.19
Specific Heat Capacity, J/kg-K 860
950
Stiffness to Weight: Axial, points 14
63 to 100
Stiffness to Weight: Bending, points 45
91 to 100
Thermal Conductivity, W/m-K 9.7
31 to 90
Thermal Diffusivity, mm2/s 3.5
16 to 38
Thermal Expansion, µm/m-K 19
4.5 to 5.6