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Ferrite vs. Hafnia

Both ferrite and hafnia 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 ferrite and the bottom bar is hafnia.

FerriteHafnia (Hafnium Oxide, HfO2)
Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 4.7 to 4.8
9.7
Elastic (Young's, Tensile) Modulus, GPa 120 to 140
57
Electrical Resistivity Order of Magnitude, 10x Ω-m 1.0 to 1.5
9.0
Specific Heat Capacity, J/kg-K 710 to 1050
120
Stiffness to Weight: Axial, points 15 to 16
3.3
Stiffness to Weight: Bending, points 35 to 36
13
Thermal Conductivity, W/m-K 3.9 to 6.3
1.1
Thermal Diffusivity, mm2/s 0.78 to 1.9
0.95
Thermal Expansion, µm/m-K 8.0 to 9.3
6.0