Forsterite vs. Silicon Nitride

Forsterite belongs to the oxide-based engineering ceramics classification, while silicon nitride belongs to the non-oxide engineering ceramics. There are 8 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Forsterite (Mg₂SiO₄)Silicon Nitride (Si₃N₄)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.1 to 3.1
Density, g/cm³		2.2 to 3.4

Dielectric Constant (Relative Permittivity) At 1 MHz		6.2
Dielectric Constant (Relative Permittivity) At 1 MHz		8.0 to 10

Dielectric Strength (Breakdown Potential), kV/mm		7.9
Dielectric Strength (Breakdown Potential), kV/mm		18

Flexural Strength, MPa		40 to 160
Flexural Strength, MPa		130 to 810

Specific Heat Capacity, J/kg-K		850
Specific Heat Capacity, J/kg-K		720 to 800

Thermal Conductivity, W/m-K		1.7 to 3.5
Thermal Conductivity, W/m-K		12 to 31

Thermal Diffusivity, mm²/s		0.94 to 1.3
Thermal Diffusivity, mm²/s		7.5 to 13

Thermal Expansion, µm/m-K		9.0 to 10
Thermal Expansion, µm/m-K		2.5 to 3.2

Forsterite vs. Silicon Nitride

Material Properties

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