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EN AC-43400 Aluminum vs. ZK51A Magnesium

EN AC-43400 aluminum belongs to the aluminum alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN AC-43400 aluminum and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
45
Elongation at Break, % 1.1
4.7
Fatigue Strength, MPa 110
62
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
18
Tensile Strength: Ultimate (UTS), MPa 270
240
Tensile Strength: Yield (Proof), MPa 160
150

Thermal Properties

Latent Heat of Fusion, J/g 540
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
970
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 22
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
28
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.6
1.8
Embodied Carbon, kg CO2/kg material 7.8
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1070
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6
10
Resilience: Unit (Modulus of Resilience), kJ/m3 180
260
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
64
Strength to Weight: Axial, points 29
36
Strength to Weight: Bending, points 36
47
Thermal Diffusivity, mm2/s 59
61
Thermal Shock Resistance, points 12
15

Alloy Composition

Aluminum (Al), % 86 to 90.8
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 1.0
0
Lead (Pb), % 0 to 0.15
0
Magnesium (Mg), % 0.2 to 0.5
93.1 to 95.9
Manganese (Mn), % 0 to 0.55
0
Nickel (Ni), % 0 to 0.15
0 to 0.010
Silicon (Si), % 9.0 to 11
0
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.15
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3