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Yttria vs. High-silica Glass

Yttria belongs to the oxide-based engineering ceramics classification, while high-silica glass belongs to the glass and glass-ceramics. There are 5 material properties with values for both materials. Properties with values for just one material (14, 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 high-silica glass.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 5.0
2.4
Elastic (Young's, Tensile) Modulus, GPa 120
78
Stiffness to Weight: Axial, points 13
19
Stiffness to Weight: Bending, points 32
61
Thermal Expansion, µm/m-K 8.0
0.6 to 0.75