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Boron Carbide vs. Cesium Bromide

Boron carbide belongs to the non-oxide engineering ceramics classification, while cesium bromide belongs to the non-glass optical 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 boron carbide and the bottom bar is cesium bromide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.1 to 2.7
4.4
Elastic (Young's, Tensile) Modulus, GPa 240 to 460
16
Knoop Hardness 2600 to 3200
20
Poisson's Ratio 0.17 to 0.19
0.28
Specific Heat Capacity, J/kg-K 950
270
Stiffness to Weight: Axial, points 63 to 100
2.0
Stiffness to Weight: Bending, points 91 to 100
19
Thermal Conductivity, W/m-K 31 to 90
0.9
Thermal Diffusivity, mm2/s 16 to 38
0.76
Thermal Expansion, µm/m-K 4.5 to 5.6
48