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Yttria vs. Potassium Chloride

Yttria belongs to the oxide-based engineering ceramics classification, while potassium chloride belongs to the non-glass optical 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 yttria and the bottom bar is potassium chloride.

Metric UnitsUS Customary Units

Material Properties

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