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ZK40A Magnesium vs. 5456 Aluminum

ZK40A magnesium belongs to the magnesium alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ZK40A magnesium and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
68
Elongation at Break, % 4.2
11 to 18
Fatigue Strength, MPa 190
130 to 210
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 160
190 to 210
Tensile Strength: Ultimate (UTS), MPa 280
320 to 340
Tensile Strength: Yield (Proof), MPa 260
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 340
390
Maximum Temperature: Mechanical, °C 120
190
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 540
570
Specific Heat Capacity, J/kg-K 970
900
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 26
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
29
Electrical Conductivity: Equal Weight (Specific), % IACS 130
97

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 1.8
2.7
Embodied Carbon, kg CO2/kg material 24
9.0
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 950
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 740
170 to 470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 65
50
Strength to Weight: Axial, points 43
33 to 35
Strength to Weight: Bending, points 53
38 to 40
Thermal Diffusivity, mm2/s 62
48
Thermal Shock Resistance, points 17
14 to 15

Alloy Composition


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Aluminum (Al), % 0
92 to 94.8
Chromium (Cr), % 0
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.4
Magnesium (Mg), % 94.2 to 96.1
4.7 to 5.5
Manganese (Mn), % 0
0.5 to 1.0
Silicon (Si), % 0
0 to 0.25
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 3.5 to 4.5
0 to 0.25
Zirconium (Zr), % 0.45 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15