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Zamak 7 vs. Z21210 Zinc

Both Zamak 7 and Z21210 zinc are zinc alloys. There are 12 material properties with values for both materials. Properties with values for just one material (23, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Tensile Strength: Ultimate (UTS), MPa 280
150 to 170

Thermal Properties

Melting Completion (Liquidus), °C 390
420
Melting Onset (Solidus), °C 380
420
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 27
32

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
28
Electrical Conductivity: Equal Weight (Specific), % IACS 38
35

Otherwise Unclassified Properties

Density, g/cm3 6.4
7.1

Common Calculations

Strength to Weight: Axial, points 12
5.7 to 6.4
Strength to Weight: Bending, points 15
8.6 to 9.4
Thermal Diffusivity, mm2/s 43
38