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Thallium Bromoiodide vs. Machinable Glass-ceramic

Thallium bromoiodide belongs to the non-glass optical ceramics classification, while machinable glass-ceramic belongs to the glass and glass-ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (18, 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 thallium bromoiodide and the bottom bar is machinable glass-ceramic.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 7.4
2.7
Elastic (Young's, Tensile) Modulus, GPa 31
67
Poisson's Ratio 0.37
0.29
Shear Modulus, GPa 12
26
Specific Heat Capacity, J/kg-K 150
790
Stiffness to Weight: Axial, points 2.3
14
Stiffness to Weight: Bending, points 14
51
Thermal Conductivity, W/m-K 0.55
1.2
Thermal Diffusivity, mm2/s 0.5
0.56
Thermal Expansion, µm/m-K 6.0
21