PEEK vs. Forsterite

PEEK and forsterite belong to fundamentally different material chemistries. PEEK is a polymeric material, while forsterite is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 6 material properties with values for both materials. Properties with values for just one material (26, in this case) are not shown.

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

Polyetheretherketone (PEEK)Forsterite (Mg₂SiO₄)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		1.3 to 1.5
Density, g/cm³		2.1 to 3.1

Flexural Strength, MPa		150 to 330
Flexural Strength, MPa		40 to 160

Specific Heat Capacity, J/kg-K		1390 to 1700
Specific Heat Capacity, J/kg-K		850

Thermal Conductivity, W/m-K		0.25 to 0.93
Thermal Conductivity, W/m-K		1.7 to 3.5

Thermal Diffusivity, mm²/s		0.1 to 0.51
Thermal Diffusivity, mm²/s		0.94 to 1.3

Thermal Expansion, µm/m-K		15 to 52
Thermal Expansion, µm/m-K		9.0 to 10

PEEK vs. Forsterite

Material Properties

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