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EN-MC32110 Magnesium vs. 2218 Aluminum

EN-MC32110 magnesium belongs to the magnesium alloys classification, while 2218 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC32110 magnesium and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
95 to 110
Elastic (Young's, Tensile) Modulus, GPa 49
73
Elongation at Break, % 2.2
6.8 to 10
Fatigue Strength, MPa 80
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 19
27
Shear Strength, MPa 120
210 to 250
Tensile Strength: Ultimate (UTS), MPa 220
330 to 430
Tensile Strength: Yield (Proof), MPa 140
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 330
390
Maximum Temperature: Mechanical, °C 99
220
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 500
510
Specific Heat Capacity, J/kg-K 950
870
Thermal Conductivity, W/m-K 120
140
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 2.1
3.1
Embodied Carbon, kg CO2/kg material 22
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 920
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 210
450 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
45
Strength to Weight: Axial, points 29
30 to 39
Strength to Weight: Bending, points 38
34 to 41
Thermal Diffusivity, mm2/s 58
52
Thermal Shock Resistance, points 12
15 to 19

Alloy Composition


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Aluminum (Al), % 0 to 0.2
88.8 to 93.6
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 2.4 to 3.0
3.5 to 4.5
Iron (Fe), % 0 to 0.050
0 to 1.0
Magnesium (Mg), % 89.3 to 91.9
1.2 to 1.8
Manganese (Mn), % 0.25 to 0.75
0 to 0.2
Nickel (Ni), % 0 to 0.010
1.7 to 2.3
Silicon (Si), % 0 to 0.2
0 to 0.9
Zinc (Zn), % 5.5 to 6.5
0 to 0.25
Residuals, % 0 to 0.010
0 to 0.15