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Cesium Bromide vs. Boron Carbide

Cesium bromide 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. 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 cesium bromide and the bottom bar is boron carbide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 4.4
2.1 to 2.7
Elastic (Young's, Tensile) Modulus, GPa 16
240 to 460
Knoop Hardness 20
2600 to 3200
Poisson's Ratio 0.28
0.17 to 0.19
Specific Heat Capacity, J/kg-K 270
Stiffness to Weight: Axial, points 2.0
63 to 100
Stiffness to Weight: Bending, points 19
91 to 100
Thermal Conductivity, W/m-K 0.9
31 to 90
Thermal Diffusivity, mm2/s 0.76
16 to 38
Thermal Expansion, µm/m-K 48
4.5 to 5.6