PEEK vs. GM-120 Glass Ceramic

PEEK and GM-120 glass ceramic belong to fundamentally different material chemistries. PEEK is a polymeric material, while GM-120 glass ceramic is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 8 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.

For each property being compared, the top bar is PEEK and the bottom bar is GM-120 glass ceramic.

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Material Properties

Density, g/cm³		1.3 to 1.5
Density, g/cm³		2.5

Elastic (Young's, Tensile) Modulus, GPa		4.0 to 24
Elastic (Young's, Tensile) Modulus, GPa		56

Electrical Resistivity Order of Magnitude, 10^x Ω-m		3.0 to 14
Electrical Resistivity Order of Magnitude, 10^x Ω-m		10

Flexural Strength, MPa		150 to 330
Flexural Strength, MPa		57

Stiffness to Weight: Axial, points		1.5 to 10
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		36 to 73
Stiffness to Weight: Bending, points		52

Thermal Conductivity, W/m-K		0.25 to 0.93
Thermal Conductivity, W/m-K		3.0

Thermal Expansion, µm/m-K		15 to 52
Thermal Expansion, µm/m-K		9.5

PEEK vs. GM-120 Glass Ceramic

Material Properties

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