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Thallium Bromoiodide vs. Barium Fluoride

Both thallium bromoiodide and barium fluoride are non-glass optical ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is thallium bromoiodide and the bottom bar is barium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 31
60
Poisson's Ratio 0.37
0.32
Shear Modulus, GPa 12
25

Thermal Properties

Melting Onset (Solidus), °C 420
1370
Specific Heat Capacity, J/kg-K 150
420
Thermal Conductivity, W/m-K 0.55
9.0
Thermal Expansion, µm/m-K 6.0
18

Otherwise Unclassified Properties

Density, g/cm3 7.4
4.9
Light Transmission Range, µm 0.6 to 40
0.15 to 13
Refractive Index 2.4
1.6

Common Calculations

Stiffness to Weight: Axial, points 2.3
6.8
Stiffness to Weight: Bending, points 14
27
Thermal Diffusivity, mm2/s 0.5
4.4