Hafnia vs. PEEK

Hafnia and PEEK belong to fundamentally different material chemistries. Hafnia is a ceramic material, while PEEK is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 11 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

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

Metric UnitsUS Customary Units

Thermal Properties

Maximum Temperature: Mechanical, °C		2800
Maximum Temperature: Mechanical, °C		330

Melting Onset (Solidus), °C		2900
Melting Onset (Solidus), °C		340

Specific Heat Capacity, J/kg-K		120
Specific Heat Capacity, J/kg-K		1390 to 1700

Thermal Conductivity, W/m-K		1.1
Thermal Conductivity, W/m-K		0.25 to 0.93

Thermal Expansion, µm/m-K		6.0
Thermal Expansion, µm/m-K		15 to 52

Common Calculations

Stiffness to Weight: Axial, points		3.3
Stiffness to Weight: Axial, points		1.5 to 10

Stiffness to Weight: Bending, points		13
Stiffness to Weight: Bending, points		36 to 73

Thermal Diffusivity, mm²/s		0.95
Thermal Diffusivity, mm²/s		0.1 to 0.51

Elastic (Young's, Tensile) Modulus, GPa		57
Elastic (Young's, Tensile) Modulus, GPa		4.0 to 24

Electrical Resistivity Order of Magnitude, 10^x Ω-m		9.0
Electrical Resistivity Order of Magnitude, 10^x Ω-m		3.0 to 14

Density, g/cm³		9.7
Density, g/cm³		1.3 to 1.5

Hafnia vs. PEEK

Mechanical Properties

Thermal Properties

Electrical Properties

Otherwise Unclassified Properties

Common Calculations

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