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Silver Bromide vs. Low Expansion Glass-ceramic

Silver bromide belongs to the non-glass optical ceramics classification, while low expansion glass-ceramic belongs to the glass and glass-ceramics. There are 11 material properties with values for both materials. Properties with values for just one material (10, 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 low expansion glass-ceramic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 32
83

Thermal Properties

Specific Heat Capacity, J/kg-K 290
800
Thermal Conductivity, W/m-K 1.2
1.5
Thermal Expansion, µm/m-K 30
1.7

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 13
5.7

Otherwise Unclassified Properties

Density, g/cm3 6.5
2.4
Light Transmission Range, µm 0.45 to 35
0.5 to 2.7
Refractive Index 2.3
1.5

Common Calculations

Stiffness to Weight: Axial, points 2.7
19
Stiffness to Weight: Bending, points 16
59
Thermal Diffusivity, mm2/s 0.64
0.76