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EQ21A Magnesium vs. 6018 Aluminum

EQ21A magnesium belongs to the magnesium alloys classification, while 6018 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EQ21A magnesium and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
69
Elongation at Break, % 2.4
9.0 to 9.1
Fatigue Strength, MPa 110
85 to 89
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
26
Shear Strength, MPa 150
170 to 180
Tensile Strength: Ultimate (UTS), MPa 250
290 to 300
Tensile Strength: Yield (Proof), MPa 190
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 340
400
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 560
570
Specific Heat Capacity, J/kg-K 980
890
Thermal Conductivity, W/m-K 110
170
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
44
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 80
10
Density, g/cm3 1.9
2.9
Embodied Carbon, kg CO2/kg material 27
8.2
Embodied Energy, MJ/kg 210
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 410
360 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 63
48
Strength to Weight: Axial, points 37
28 to 29
Strength to Weight: Bending, points 47
34 to 35
Thermal Diffusivity, mm2/s 62
65
Thermal Shock Resistance, points 15
13

Alloy Composition

Aluminum (Al), % 0
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0.050 to 0.1
0.15 to 0.4
Iron (Fe), % 0
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 93.9 to 96.8
0.6 to 1.2
Manganese (Mn), % 0
0.3 to 0.8
Nickel (Ni), % 0 to 0.010
0
Silicon (Si), % 0
0.5 to 1.2
Silver (Ag), % 1.3 to 1.7
0
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0
0 to 0.3
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0 to 0.15