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Potassium Chloride vs. Yttria

Potassium chloride belongs to the non-glass optical ceramics classification, while yttria belongs to the oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (7, 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 potassium chloride and the bottom bar is yttria.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.0
5.0
Elastic (Young's, Tensile) Modulus, GPa 28
120
Light Transmission Range, µm 0.21 to 20
0.3 to 12
Melting Onset (Solidus), °C 780
2440
Specific Heat Capacity, J/kg-K 690
440
Stiffness to Weight: Axial, points 7.7
13
Stiffness to Weight: Bending, points 51
32
Thermal Conductivity, W/m-K 6.5
0.3
Thermal Diffusivity, mm2/s 4.7
0.14
Thermal Expansion, µm/m-K 36
8.0