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6018 Aluminum vs. EN-MC21110 Magnesium

6018 aluminum belongs to the aluminum alloys classification, while EN-MC21110 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 6018 aluminum and the bottom bar is EN-MC21110 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
46
Elongation at Break, % 9.0 to 9.1
2.8 to 6.7
Fatigue Strength, MPa 85 to 89
75 to 78
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 170 to 180
120 to 160
Tensile Strength: Ultimate (UTS), MPa 290 to 300
200 to 270
Tensile Strength: Yield (Proof), MPa 220 to 230
100 to 120

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 160
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 570
500
Specific Heat Capacity, J/kg-K 890
990
Thermal Conductivity, W/m-K 170
80
Thermal Expansion, µm/m-K 23
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
12
Electrical Conductivity: Equal Weight (Specific), % IACS 140
61

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.2
23
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 25
4.9 to 14
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
120 to 150
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 48
69
Strength to Weight: Axial, points 28 to 29
33 to 44
Strength to Weight: Bending, points 34 to 35
45 to 54
Thermal Diffusivity, mm2/s 65
47
Thermal Shock Resistance, points 13
12 to 16

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
7.0 to 8.7
Bismuth (Bi), % 0.4 to 0.7
0
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0 to 0.030
Iron (Fe), % 0 to 0.7
0 to 0.0050
Lead (Pb), % 0.4 to 1.2
0
Magnesium (Mg), % 0.6 to 1.2
89.6 to 92.6
Manganese (Mn), % 0.3 to 0.8
0.1 to 0.35
Nickel (Ni), % 0
0 to 0.0020
Silicon (Si), % 0.5 to 1.2
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.3
0.35 to 1.0
Residuals, % 0
0 to 0.010