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EV31A Magnesium vs. Z41121 Zinc

EV31A magnesium belongs to the magnesium alloys classification, while Z41121 zinc belongs to the zinc alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 EV31A magnesium and the bottom bar is Z41121 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
87
Elongation at Break, % 3.5
50
Poisson's Ratio 0.27
0.25
Shear Modulus, GPa 17
35
Tensile Strength: Ultimate (UTS), MPa 260
140
Tensile Strength: Yield (Proof), MPa 170
120

Thermal Properties

Maximum Temperature: Mechanical, °C 200
90
Melting Onset (Solidus), °C 590
400
Specific Heat Capacity, J/kg-K 1000
390
Thermal Conductivity, W/m-K 86
110
Thermal Expansion, µm/m-K 27
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
27
Electrical Conductivity: Equal Weight (Specific), % IACS 90
37

Otherwise Unclassified Properties

Density, g/cm3 1.8
6.6

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.1
68
Resilience: Unit (Modulus of Resilience), kJ/m3 330
79
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 65
23
Strength to Weight: Axial, points 40
6.1
Strength to Weight: Bending, points 50
9.3
Thermal Diffusivity, mm2/s 47
44
Thermal Shock Resistance, points 16
4.6