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4006 Aluminum vs. Z21210 Zinc

4006 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 4006 aluminum and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Tensile Strength: Ultimate (UTS), MPa 110 to 160
150 to 170

Thermal Properties

Melting Completion (Liquidus), °C 640
420
Melting Onset (Solidus), °C 620
420
Specific Heat Capacity, J/kg-K 900
400
Thermal Conductivity, W/m-K 220
110
Thermal Expansion, µm/m-K 23
32

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
28
Electrical Conductivity: Equal Weight (Specific), % IACS 180
35

Otherwise Unclassified Properties

Density, g/cm3 2.7
7.1

Common Calculations

Strength to Weight: Axial, points 11 to 16
5.7 to 6.4
Strength to Weight: Bending, points 19 to 24
8.6 to 9.4
Thermal Diffusivity, mm2/s 89
38