Hafnia vs. ZA-12

Hafnia and ZA-12 belong to fundamentally different material chemistries. Hafnia is a ceramic material, while ZA-12 is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (27, in this case) are not shown.

For each property being compared, the top bar is hafnia and the bottom bar is ZA-12.

Hafnia (Hafnium Oxide, HfO₂)Zinc-Aluminum 12 (ZA-12, Z35631)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		9.7
Density, g/cm³		6.0

Elastic (Young's, Tensile) Modulus, GPa		57
Elastic (Young's, Tensile) Modulus, GPa		83

Maximum Temperature: Mechanical, °C		2800
Maximum Temperature: Mechanical, °C		100

Melting Onset (Solidus), °C		2900
Melting Onset (Solidus), °C		380

Specific Heat Capacity, J/kg-K		120
Specific Heat Capacity, J/kg-K		450

Stiffness to Weight: Axial, points		3.3
Stiffness to Weight: Axial, points		7.6

Stiffness to Weight: Bending, points		13
Stiffness to Weight: Bending, points		24

Thermal Conductivity, W/m-K		1.1
Thermal Conductivity, W/m-K		120

Thermal Diffusivity, mm²/s		0.95
Thermal Diffusivity, mm²/s		43

Thermal Expansion, µm/m-K		6.0
Thermal Expansion, µm/m-K		24

Hafnia vs. ZA-12

Material Properties

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