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EN-MC21310 Magnesium vs. 2618 Aluminum

EN-MC21310 magnesium belongs to the magnesium alloys classification, while 2618 aluminum belongs to the aluminum alloys.

For each property being compared, the top bar is EN-MC21310 magnesium and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
120
Elastic (Young's, Tensile) Modulus, GPa 45
71
Elongation at Break, % 9.0
5.8
Fatigue Strength, MPa 86
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 120
260
Tensile Strength: Ultimate (UTS), MPa 200
420
Tensile Strength: Yield (Proof), MPa 120
350

Thermal Properties

Latent Heat of Fusion, J/g 360
390
Maximum Temperature: Mechanical, °C 100
210
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 560
550
Specific Heat Capacity, J/kg-K 1000
880
Thermal Conductivity, W/m-K 89
160
Thermal Expansion, µm/m-K 26
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
37
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.6
2.9
Embodied Carbon, kg CO2/kg material 23
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 970
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
23
Resilience: Unit (Modulus of Resilience), kJ/m3 160
850
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 73
47
Strength to Weight: Axial, points 34
40
Strength to Weight: Bending, points 47
42
Thermal Diffusivity, mm2/s 55
62
Thermal Shock Resistance, points 12
19

Alloy Composition


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Aluminum (Al), % 1.8 to 2.6
92.4 to 94.9
Copper (Cu), % 0 to 0.010
1.9 to 2.7
Iron (Fe), % 0 to 0.0050
0.9 to 1.3
Magnesium (Mg), % 95.2 to 97.4
1.3 to 1.8
Manganese (Mn), % 0.1 to 0.7
0
Nickel (Ni), % 0 to 0.0020
0.9 to 1.2
Silicon (Si), % 0.7 to 1.2
0.1 to 0.25
Titanium (Ti), % 0
0.040 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.1
Residuals, % 0 to 0.010
0 to 0.15