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WE43B Magnesium vs. 2618 Aluminum

WE43B magnesium belongs to the magnesium alloys classification, while 2618 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is WE43B magnesium and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
71
Elongation at Break, % 2.2
5.8
Fatigue Strength, MPa 110
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 17
27
Shear Strength, MPa 140
260
Tensile Strength: Ultimate (UTS), MPa 250
420
Tensile Strength: Yield (Proof), MPa 200
350

Thermal Properties

Latent Heat of Fusion, J/g 330
390
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 550
550
Specific Heat Capacity, J/kg-K 960
880
Thermal Conductivity, W/m-K 51
160
Thermal Expansion, µm/m-K 27
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
37
Electrical Conductivity: Equal Weight (Specific), % IACS 53
110

Otherwise Unclassified Properties

Base Metal Price, % relative 34
11
Density, g/cm3 1.9
2.9
Embodied Carbon, kg CO2/kg material 28
8.3
Embodied Energy, MJ/kg 250
150
Embodied Water, L/kg 910
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
23
Resilience: Unit (Modulus of Resilience), kJ/m3 430
850
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
47
Strength to Weight: Axial, points 36
40
Strength to Weight: Bending, points 46
42
Thermal Diffusivity, mm2/s 28
62
Thermal Shock Resistance, points 15
19

Alloy Composition


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Aluminum (Al), % 0
92.4 to 94.9
Copper (Cu), % 0 to 0.020
1.9 to 2.7
Iron (Fe), % 0 to 0.010
0.9 to 1.3
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
1.3 to 1.8
Manganese (Mn), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.0050
0.9 to 1.2
Silicon (Si), % 0
0.1 to 0.25
Titanium (Ti), % 0
0.040 to 0.1
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
0 to 0.1
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0
0 to 0.15