PEEK vs. Potassium Chloride

PEEK and potassium chloride belong to fundamentally different material chemistries. PEEK is a polymeric material, while potassium chloride is ceramic. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 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 potassium chloride.

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Material Properties

Density, g/cm³		1.3 to 1.5
Density, g/cm³		2.0

Elastic (Young's, Tensile) Modulus, GPa		4.0 to 24
Elastic (Young's, Tensile) Modulus, GPa		28

Melting Onset (Solidus), °C		340
Melting Onset (Solidus), °C		780

Specific Heat Capacity, J/kg-K		1390 to 1700
Specific Heat Capacity, J/kg-K		690

Stiffness to Weight: Axial, points		1.5 to 10
Stiffness to Weight: Axial, points		7.7

Stiffness to Weight: Bending, points		36 to 73
Stiffness to Weight: Bending, points		51

Thermal Conductivity, W/m-K		0.25 to 0.93
Thermal Conductivity, W/m-K		6.5

Thermal Diffusivity, mm²/s		0.1 to 0.51
Thermal Diffusivity, mm²/s		4.7

Thermal Expansion, µm/m-K		15 to 52
Thermal Expansion, µm/m-K		36

PEEK vs. Potassium Chloride

Material Properties

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