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EN AC-44400 Aluminum vs. ZK40A Magnesium

EN AC-44400 aluminum belongs to the aluminum alloys classification, while ZK40A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN AC-44400 aluminum and the bottom bar is ZK40A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 4.1
4.2
Fatigue Strength, MPa 79
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Tensile Strength: Ultimate (UTS), MPa 210
280
Tensile Strength: Yield (Proof), MPa 110
260

Thermal Properties

Latent Heat of Fusion, J/g 540
340
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 600
600
Melting Onset (Solidus), °C 590
540
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 33
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

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 1080
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.3
12
Resilience: Unit (Modulus of Resilience), kJ/m3 85
740
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
65
Strength to Weight: Axial, points 23
43
Strength to Weight: Bending, points 31
53
Thermal Diffusivity, mm2/s 60
62
Thermal Shock Resistance, points 9.8
17

Alloy Composition

Aluminum (Al), % 87.1 to 92
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.65
0
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0 to 0.1
94.2 to 96.1
Manganese (Mn), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.050
0
Silicon (Si), % 8.0 to 11
0
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
3.5 to 4.5
Zirconium (Zr), % 0
0.45 to 1.0
Residuals, % 0
0 to 0.3