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324.0 Aluminum vs. EN-MC21220 Magnesium

324.0 aluminum belongs to the aluminum alloys classification, while EN-MC21220 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 324.0 aluminum and the bottom bar is EN-MC21220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
45
Elongation at Break, % 3.0 to 4.0
11
Fatigue Strength, MPa 77 to 89
89
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
17
Tensile Strength: Ultimate (UTS), MPa 210 to 310
210
Tensile Strength: Yield (Proof), MPa 110 to 270
120

Thermal Properties

Latent Heat of Fusion, J/g 500
350
Maximum Temperature: Mechanical, °C 170
120
Melting Completion (Liquidus), °C 610
600
Melting Onset (Solidus), °C 550
540
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 150
65
Thermal Expansion, µm/m-K 21
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
16
Electrical Conductivity: Equal Weight (Specific), % IACS 120
87

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 7.9
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1090
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.8 to 8.9
20
Resilience: Unit (Modulus of Resilience), kJ/m3 85 to 510
160
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 52
71
Strength to Weight: Axial, points 22 to 32
34
Strength to Weight: Bending, points 29 to 38
46
Thermal Diffusivity, mm2/s 62
39
Thermal Shock Resistance, points 9.7 to 14
12

Alloy Composition

Aluminum (Al), % 87.3 to 92.2
4.4 to 5.5
Copper (Cu), % 0.4 to 0.6
0 to 0.010
Iron (Fe), % 0 to 1.2
0 to 0.0050
Magnesium (Mg), % 0.4 to 0.7
93.5 to 95.5
Manganese (Mn), % 0 to 0.5
0.1 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.0020
Silicon (Si), % 7.0 to 8.0
0 to 0.1
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 1.0
0 to 0.3
Residuals, % 0
0 to 0.010