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Alpha Quartz vs. Yttria

Alpha quartz 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 (6, in this case) are not shown.

For each property being compared, the top bar is alpha quartz and the bottom bar is yttria.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 2.7
5.0
Elastic (Young's, Tensile) Modulus, GPa 91
120
Light Transmission Range, µm 0.13 to 3.4
0.3 to 12
Melting Onset (Solidus), °C 1590
2440
Specific Heat Capacity, J/kg-K 720
440
Stiffness to Weight: Axial, points 19
13
Stiffness to Weight: Bending, points 57
32
Thermal Conductivity, W/m-K 8.5
0.3
Thermal Diffusivity, mm2/s 4.4
0.14
Thermal Expansion, µm/m-K 9.5
8.0