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Mullite vs. Thallium Bromoiodide

Mullite belongs to the oxide-based engineering ceramics classification, while thallium bromoiodide belongs to the non-glass optical ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (19, 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 mullite and the bottom bar is thallium bromoiodide.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7 to 3.0
7.4
Elastic (Young's, Tensile) Modulus, GPa 110 to 170
31
Poisson's Ratio 0.25
0.37
Specific Heat Capacity, J/kg-K 950
150
Stiffness to Weight: Axial, points 22 to 31
2.3
Stiffness to Weight: Bending, points 58 to 62
14
Thermal Conductivity, W/m-K 3.5 to 11
0.55
Thermal Diffusivity, mm2/s 1.4 to 3.7
0.5
Thermal Expansion, µm/m-K 5.8
6.0