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WE43B Magnesium vs. 7075 Aluminum

WE43B magnesium belongs to the magnesium alloys classification, while 7075 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 7075 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 44
70
Elongation at Break, % 2.2
1.8 to 12
Fatigue Strength, MPa 110
110 to 190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 17
26
Shear Strength, MPa 140
150 to 340
Tensile Strength: Ultimate (UTS), MPa 250
240 to 590
Tensile Strength: Yield (Proof), MPa 200
120 to 510

Thermal Properties

Latent Heat of Fusion, J/g 330
380
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 550
480
Specific Heat Capacity, J/kg-K 960
870
Thermal Conductivity, W/m-K 51
130
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
33
Electrical Conductivity: Equal Weight (Specific), % IACS 53
98

Otherwise Unclassified Properties

Base Metal Price, % relative 34
10
Density, g/cm3 1.9
3.0
Embodied Carbon, kg CO2/kg material 28
8.3
Embodied Energy, MJ/kg 250
150
Embodied Water, L/kg 910
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.2
7.8 to 44
Resilience: Unit (Modulus of Resilience), kJ/m3 430
110 to 1870
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 61
46
Strength to Weight: Axial, points 36
22 to 54
Strength to Weight: Bending, points 46
28 to 52
Thermal Diffusivity, mm2/s 28
50
Thermal Shock Resistance, points 15
10 to 25

Alloy Composition


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Aluminum (Al), % 0
86.9 to 91.4
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 0 to 0.020
1.2 to 2.0
Iron (Fe), % 0 to 0.010
0 to 0.5
Lithium (Li), % 0 to 0.2
0
Magnesium (Mg), % 89.8 to 93.5
2.1 to 2.9
Manganese (Mn), % 0 to 0.030
0 to 0.3
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0
0 to 0.4
Titanium (Ti), % 0
0 to 0.2
Unspecified Rare Earths, % 2.4 to 4.4
0
Yttrium (Y), % 3.7 to 4.3
0
Zinc (Zn), % 0 to 0.2
5.1 to 6.1
Zirconium (Zr), % 0.4 to 1.0
0 to 0.25
Residuals, % 0
0 to 0.15