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EN-MC21210 Magnesium vs. 2124 Aluminum

EN-MC21210 magnesium belongs to the magnesium alloys classification, while 2124 aluminum belongs to the aluminum 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 EN-MC21210 magnesium and the bottom bar is 2124 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 14
5.7
Fatigue Strength, MPa 70
130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 110
280
Tensile Strength: Ultimate (UTS), MPa 190
490
Tensile Strength: Yield (Proof), MPa 90
430

Thermal Properties

Latent Heat of Fusion, J/g 350
390
Maximum Temperature: Mechanical, °C 100
190
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 570
500
Specific Heat Capacity, J/kg-K 1000
880
Thermal Conductivity, W/m-K 120
150
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
38
Electrical Conductivity: Equal Weight (Specific), % IACS 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 1.6
3.0
Embodied Carbon, kg CO2/kg material 24
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 980
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
27
Resilience: Unit (Modulus of Resilience), kJ/m3 92
1290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
46
Strength to Weight: Axial, points 32
45
Strength to Weight: Bending, points 44
46
Thermal Diffusivity, mm2/s 76
58
Thermal Shock Resistance, points 11
21

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
91.3 to 94.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
3.8 to 4.9
Iron (Fe), % 0 to 0.0050
0 to 0.3
Magnesium (Mg), % 96.3 to 98.3
1.2 to 1.8
Manganese (Mn), % 0.1 to 0.7
0.3 to 0.9
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0 to 0.2
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.2
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15