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3005 Aluminum vs. Z21210 Zinc

3005 aluminum belongs to the aluminum alloys classification, while Z21210 zinc belongs to the zinc alloys. There are 12 material properties with values for both materials. Properties with values for just one material (20, 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 3005 aluminum and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Tensile Strength: Ultimate (UTS), MPa 140 to 270
150 to 170

Thermal Properties

Melting Completion (Liquidus), °C 660
Melting Onset (Solidus), °C 640
Specific Heat Capacity, J/kg-K 900
Thermal Conductivity, W/m-K 160
Thermal Expansion, µm/m-K 23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
Electrical Conductivity: Equal Weight (Specific), % IACS 140

Otherwise Unclassified Properties

Density, g/cm3 2.8

Common Calculations

Strength to Weight: Axial, points 14 to 27
5.7 to 6.4
Strength to Weight: Bending, points 21 to 33
8.6 to 9.4
Thermal Diffusivity, mm2/s 64