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Optical Silicon vs. Silver Chloride

Both optical silicon and silver chloride are non-glass optical ceramics. There are 14 material properties with values for both materials. Properties with values for just one material (9, 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 optical silicon and the bottom bar is silver chloride.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 150
20
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 80
7.0

Thermal Properties

Melting Onset (Solidus), °C 1560
460
Specific Heat Capacity, J/kg-K 700
360
Thermal Conductivity, W/m-K 150
1.2
Thermal Expansion, µm/m-K 3.0
31

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 12
12

Otherwise Unclassified Properties

Density, g/cm3 2.3
5.6
Light Transmission Range, µm 1.2 to 15
0.4 to 25
Refractive Index 3.5
2.0

Common Calculations

Stiffness to Weight: Axial, points 35
2.0
Stiffness to Weight: Bending, points 75
16
Thermal Diffusivity, mm2/s 93
0.57