MakeItFrom.com
Menu (ESC)

Potassium Bromide vs. Low Expansion Glass-ceramic

Potassium bromide belongs to the non-glass optical ceramics classification, while low expansion glass-ceramic belongs to the glass and glass-ceramics. There are 12 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is potassium bromide and the bottom bar is low expansion glass-ceramic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 24
83
Poisson's Ratio 0.17
0.22

Thermal Properties

Specific Heat Capacity, J/kg-K 450
800
Thermal Conductivity, W/m-K 4.8
1.5
Thermal Expansion, µm/m-K 39
1.7

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 MHz 4.9
5.7

Otherwise Unclassified Properties

Density, g/cm3 2.8
2.4
Light Transmission Range, µm 0.22 to 26
0.5 to 2.7
Refractive Index 1.8
1.5

Common Calculations

Stiffness to Weight: Axial, points 4.7
19
Stiffness to Weight: Bending, points 35
59
Thermal Diffusivity, mm2/s 3.9
0.76