Hafnia vs. Ferrite

Both hafnia and ferrite are oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (11, 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 ferrite.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		9.7
Density, g/cm³		4.7 to 4.8

Elastic (Young's, Tensile) Modulus, GPa		57
Elastic (Young's, Tensile) Modulus, GPa		120 to 140

Electrical Resistivity Order of Magnitude, 10^x Ω-m		9.0
Electrical Resistivity Order of Magnitude, 10^x Ω-m		1.0 to 1.5

Specific Heat Capacity, J/kg-K		120
Specific Heat Capacity, J/kg-K		710 to 1050

Stiffness to Weight: Axial, points		3.3
Stiffness to Weight: Axial, points		15 to 16

Stiffness to Weight: Bending, points		13
Stiffness to Weight: Bending, points		35 to 36

Thermal Conductivity, W/m-K		1.1
Thermal Conductivity, W/m-K		3.9 to 6.3

Thermal Diffusivity, mm²/s		0.95
Thermal Diffusivity, mm²/s		0.78 to 1.9

Thermal Expansion, µm/m-K		6.0
Thermal Expansion, µm/m-K		8.0 to 9.3

Hafnia vs. Ferrite

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