Beryllia vs. Yttria

Both beryllia and yttria are oxide-based engineering ceramics. There are 10 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Beryllia (Beryllium Oxide, BeO)Yttria (Yttrium Oxide, Y₂O₃)

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Material Properties

Compressive (Crushing) Strength, MPa		1650
Compressive (Crushing) Strength, MPa		390

Density, g/cm³		2.9
Density, g/cm³		5.0

Elastic (Young's, Tensile) Modulus, GPa		350
Elastic (Young's, Tensile) Modulus, GPa		120

Maximum Temperature: Mechanical, °C		1750
Maximum Temperature: Mechanical, °C		2000

Specific Heat Capacity, J/kg-K		1050
Specific Heat Capacity, J/kg-K		440

Stiffness to Weight: Axial, points		67
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		82
Stiffness to Weight: Bending, points		32

Thermal Conductivity, W/m-K		270
Thermal Conductivity, W/m-K		0.3

Thermal Diffusivity, mm²/s		89
Thermal Diffusivity, mm²/s		0.14

Thermal Expansion, µm/m-K		8.0
Thermal Expansion, µm/m-K		8.0

Beryllia vs. Yttria

Material Properties

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