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AZ91E Magnesium vs. 2011 Aluminum

AZ91E magnesium belongs to the magnesium alloys classification, while 2011 aluminum belongs to the aluminum alloys. There are 30 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 AZ91E magnesium and the bottom bar is 2011 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
71
Elongation at Break, % 2.5 to 6.2
8.5 to 18
Fatigue Strength, MPa 81 to 85
74 to 120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
27
Shear Strength, MPa 89 to 150
190 to 250
Tensile Strength: Ultimate (UTS), MPa 160 to 260
310 to 420
Tensile Strength: Yield (Proof), MPa 96 to 130
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 350
390
Maximum Temperature: Mechanical, °C 130
190
Melting Completion (Liquidus), °C 600
640
Melting Onset (Solidus), °C 500
540
Specific Heat Capacity, J/kg-K 990
870
Thermal Conductivity, W/m-K 84
140 to 170
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10 to 12
35 to 45
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
100 to 130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.7
3.1
Embodied Carbon, kg CO2/kg material 22
7.9
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4 to 12
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 190
140 to 680
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
44
Strength to Weight: Axial, points 25 to 42
27 to 37
Strength to Weight: Bending, points 37 to 53
32 to 40
Thermal Diffusivity, mm2/s 49
51 to 64
Thermal Shock Resistance, points 9.0 to 15
14 to 19

Alloy Composition

Aluminum (Al), % 8.1 to 9.3
91.3 to 94.6
Bismuth (Bi), % 0
0.2 to 0.6
Copper (Cu), % 0 to 0.015
5.0 to 6.0
Iron (Fe), % 0 to 0.0050
0 to 0.7
Lead (Pb), % 0
0.2 to 0.6
Magnesium (Mg), % 88.8 to 91.3
0
Manganese (Mn), % 0.17 to 0.35
0
Nickel (Ni), % 0 to 0.0010
0
Silicon (Si), % 0 to 0.2
0 to 0.4
Zinc (Zn), % 0.4 to 1.0
0 to 0.3
Residuals, % 0
0 to 0.15

Comparable Variants