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5021 Aluminum vs. EN-MC21210 Magnesium

5021 aluminum belongs to the aluminum alloys classification, while EN-MC21210 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 5021 aluminum and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
44
Elongation at Break, % 1.1 to 3.4
14
Fatigue Strength, MPa 85 to 110
70
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
17
Shear Strength, MPa 170
110
Tensile Strength: Ultimate (UTS), MPa 300 to 310
190
Tensile Strength: Yield (Proof), MPa 240 to 270
90

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 180
100
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 590
570
Specific Heat Capacity, J/kg-K 900
1000
Thermal Conductivity, W/m-K 140
120
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
24
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.6
Embodied Carbon, kg CO2/kg material 8.6
24
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
22
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
92
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
72
Strength to Weight: Axial, points 30 to 32
32
Strength to Weight: Bending, points 37
44
Thermal Diffusivity, mm2/s 57
76
Thermal Shock Resistance, points 13 to 14
11

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
1.6 to 2.6
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.010
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 2.2 to 2.8
96.3 to 98.3
Manganese (Mn), % 0.1 to 0.5
0.1 to 0.7
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.4
0 to 0.1
Zinc (Zn), % 0 to 0.15
0 to 0.2
Residuals, % 0
0 to 0.010