Zamak 3 vs. Hafnia

Zamak 3 and hafnia belong to fundamentally different material chemistries. Zamak 3 is a metal, while hafnia is a ceramic material. 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 Zamak 3 and the bottom bar is hafnia.

Zamak 3 (ASTM AG40A, Z33520, Mazak 3) Zinc Alloy Hafnia (Hafnium Oxide, HfO₂)

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Material Properties

Density, g/cm³		6.4
Density, g/cm³		9.7

Elastic (Young's, Tensile) Modulus, GPa		86
Elastic (Young's, Tensile) Modulus, GPa		57

Maximum Temperature: Mechanical, °C		95
Maximum Temperature: Mechanical, °C		2800

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

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		120

Stiffness to Weight: Axial, points		7.5
Stiffness to Weight: Axial, points		3.3

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		13

Thermal Conductivity, W/m-K		110
Thermal Conductivity, W/m-K		1.1

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

Thermal Expansion, µm/m-K		27
Thermal Expansion, µm/m-K		6.0

Zamak 3 vs. Hafnia

Material Properties

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