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AZ91E Magnesium vs. 6066 Aluminum

AZ91E magnesium belongs to the magnesium alloys classification, while 6066 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 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 46
70
Elongation at Break, % 2.5 to 6.2
7.8 to 17
Fatigue Strength, MPa 81 to 85
94 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 18
26
Shear Strength, MPa 89 to 150
95 to 240
Tensile Strength: Ultimate (UTS), MPa 160 to 260
160 to 400
Tensile Strength: Yield (Proof), MPa 96 to 130
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 350
410
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 600
650
Melting Onset (Solidus), °C 500
560
Specific Heat Capacity, J/kg-K 990
890
Thermal Conductivity, W/m-K 84
150
Thermal Expansion, µm/m-K 27
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10 to 12
40
Electrical Conductivity: Equal Weight (Specific), % IACS 52 to 60
130

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
2.8
Embodied Carbon, kg CO2/kg material 22
8.3
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 990
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4 to 12
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 190
61 to 920
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
49
Strength to Weight: Axial, points 25 to 42
16 to 39
Strength to Weight: Bending, points 37 to 53
23 to 43
Thermal Diffusivity, mm2/s 49
61
Thermal Shock Resistance, points 9.0 to 15
6.9 to 17

Alloy Composition

Aluminum (Al), % 8.1 to 9.3
93 to 97
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0 to 0.015
0.7 to 1.2
Iron (Fe), % 0 to 0.0050
0 to 0.5
Magnesium (Mg), % 88.8 to 91.3
0.8 to 1.4
Manganese (Mn), % 0.17 to 0.35
0.6 to 1.1
Nickel (Ni), % 0 to 0.0010
0
Silicon (Si), % 0 to 0.2
0.9 to 1.8
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0.4 to 1.0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants