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5070 Aluminum vs. EN-MC21220 Magnesium

5070 aluminum belongs to the aluminum alloys classification, while EN-MC21220 magnesium belongs to the magnesium 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 5070 aluminum and the bottom bar is EN-MC21220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
45
Elongation at Break, % 20
11
Fatigue Strength, MPa 150
89
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 190
120
Tensile Strength: Ultimate (UTS), MPa 300
210
Tensile Strength: Yield (Proof), MPa 140
120

Thermal Properties

Latent Heat of Fusion, J/g 390
350
Maximum Temperature: Mechanical, °C 190
120
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 550
540
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 130
65
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
16
Electrical Conductivity: Equal Weight (Specific), % IACS 100
87

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.8
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1170
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
20
Resilience: Unit (Modulus of Resilience), kJ/m3 150
160
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
71
Strength to Weight: Axial, points 31
34
Strength to Weight: Bending, points 37
46
Thermal Diffusivity, mm2/s 53
39
Thermal Shock Resistance, points 14
12

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
4.4 to 5.5
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0 to 0.010
Iron (Fe), % 0 to 0.4
0 to 0.0050
Magnesium (Mg), % 3.5 to 4.5
93.5 to 95.5
Manganese (Mn), % 0.4 to 0.8
0.1 to 0.6
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.25
0 to 0.1
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0.4 to 0.8
0 to 0.3
Residuals, % 0 to 0.15
0 to 0.010