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5021 Aluminum vs. EN-MC65220 Magnesium

5021 aluminum belongs to the aluminum alloys classification, while EN-MC65220 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 5021 aluminum and the bottom bar is EN-MC65220 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
44
Elongation at Break, % 1.1 to 3.4
2.2
Fatigue Strength, MPa 85 to 110
110
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 170
150
Tensile Strength: Ultimate (UTS), MPa 300 to 310
270
Tensile Strength: Yield (Proof), MPa 240 to 270
200

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
610
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
980
Thermal Conductivity, W/m-K 140
110
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
25
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
80
Density, g/cm3 2.7
1.9
Embodied Carbon, kg CO2/kg material 8.6
27
Embodied Energy, MJ/kg 150
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
62
Strength to Weight: Axial, points 30 to 32
40
Strength to Weight: Bending, points 37
49
Thermal Diffusivity, mm2/s 57
61
Thermal Shock Resistance, points 13 to 14
17

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
0
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0.050 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.010
Magnesium (Mg), % 2.2 to 2.8
93.8 to 96.8
Manganese (Mn), % 0.1 to 0.5
0 to 0.15
Nickel (Ni), % 0
0 to 0.0050
Silicon (Si), % 0 to 0.4
0 to 0.010
Silver (Ag), % 0
1.3 to 1.7
Unspecified Rare Earths, % 0
1.5 to 3.0
Zinc (Zn), % 0 to 0.15
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010