Beryllia vs. Forsterite

Both beryllia and forsterite are oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

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

Beryllia (Beryllium Oxide, BeO)Forsterite (Mg₂SiO₄)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.9
Density, g/cm³		2.1 to 3.1

Dielectric Constant (Relative Permittivity) At 1 MHz		6.6
Dielectric Constant (Relative Permittivity) At 1 MHz		6.2

Dielectric Strength (Breakdown Potential), kV/mm		11
Dielectric Strength (Breakdown Potential), kV/mm		7.9

Electrical Dissipation At 1 MHz		0.00060
Electrical Dissipation At 1 MHz		0.00030

Flexural Strength, MPa		240
Flexural Strength, MPa		40 to 160

Specific Heat Capacity, J/kg-K		1050
Specific Heat Capacity, J/kg-K		850

Thermal Conductivity, W/m-K		270
Thermal Conductivity, W/m-K		1.7 to 3.5

Thermal Diffusivity, mm²/s		89
Thermal Diffusivity, mm²/s		0.94 to 1.3

Thermal Expansion, µm/m-K		8.0
Thermal Expansion, µm/m-K		9.0 to 10

Beryllia vs. Forsterite

Material Properties

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