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Silver Bromide vs. Calcium Fluoride

Both silver bromide and calcium fluoride are non-glass optical ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (4, 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 silver bromide and the bottom bar is calcium fluoride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 32
80

Thermal Properties

Melting Onset (Solidus), °C 430
1420
Specific Heat Capacity, J/kg-K 290
860
Thermal Conductivity, W/m-K 1.2
9.7
Thermal Expansion, µm/m-K 30
19

Otherwise Unclassified Properties

Density, g/cm3 6.5
3.2
Light Transmission Range, µm 0.45 to 35
0.15 to 9.0
Refractive Index 2.3
1.4

Common Calculations

Stiffness to Weight: Axial, points 2.7
14
Stiffness to Weight: Bending, points 16
45
Thermal Diffusivity, mm2/s 0.64
3.5