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EN-MC21120 Magnesium vs. Z21210 Zinc

EN-MC21120 magnesium belongs to the magnesium 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 EN-MC21120 magnesium and the bottom bar is Z21210 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Tensile Strength: Ultimate (UTS), MPa 200 to 270
150 to 170

Thermal Properties

Melting Completion (Liquidus), °C 600
Melting Onset (Solidus), °C 490
Specific Heat Capacity, J/kg-K 990
Thermal Conductivity, W/m-K 76
Thermal Expansion, µm/m-K 26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
Electrical Conductivity: Equal Weight (Specific), % IACS 59

Otherwise Unclassified Properties

Density, g/cm3 1.7

Common Calculations

Strength to Weight: Axial, points 31 to 43
5.7 to 6.4
Strength to Weight: Bending, points 43 to 53
8.6 to 9.4
Thermal Diffusivity, mm2/s 44