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Hafnia vs. Potassium Bromide

Hafnia belongs to the oxide-based engineering ceramics classification, while potassium bromide belongs to the non-glass optical ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (8, 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 hafnia and the bottom bar is potassium bromide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 9.7
2.8
Elastic (Young's, Tensile) Modulus, GPa 57
24
Melting Onset (Solidus), °C 2900
730
Specific Heat Capacity, J/kg-K 120
450
Stiffness to Weight: Axial, points 3.3
4.7
Stiffness to Weight: Bending, points 13
35
Thermal Conductivity, W/m-K 1.1
4.8
Thermal Diffusivity, mm2/s 0.95
3.9
Thermal Expansion, µm/m-K 6.0
39