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EN-MC21210 Magnesium vs. 2117 Aluminum

EN-MC21210 magnesium belongs to the magnesium alloys classification, while 2117 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC21210 magnesium and the bottom bar is 2117 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
70
Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 14
26
Fatigue Strength, MPa 70
95
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 110
200
Tensile Strength: Ultimate (UTS), MPa 190
300
Tensile Strength: Yield (Proof), MPa 90
170

Thermal Properties

Latent Heat of Fusion, J/g 350
400
Maximum Temperature: Mechanical, °C 100
220
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 570
550
Specific Heat Capacity, J/kg-K 1000
880
Thermal Conductivity, W/m-K 120
150
Thermal Expansion, µm/m-K 27
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
40
Electrical Conductivity: Equal Weight (Specific), % IACS 130
120

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
64
Resilience: Unit (Modulus of Resilience), kJ/m3 92
190
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
47
Strength to Weight: Axial, points 32
28
Strength to Weight: Bending, points 44
33
Thermal Diffusivity, mm2/s 76
59
Thermal Shock Resistance, points 11
12

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
91 to 97.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.010
2.2 to 4.5
Iron (Fe), % 0 to 0.0050
0 to 0.7
Magnesium (Mg), % 96.3 to 98.3
0.2 to 1.0
Manganese (Mn), % 0.1 to 0.7
0.4 to 1.0
Nickel (Ni), % 0 to 0.0020
0
Silicon (Si), % 0 to 0.1
0.2 to 0.8
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.2
0 to 0.25
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15