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1080A Aluminum vs. AZ91E Magnesium

1080A aluminum belongs to the aluminum alloys classification, while AZ91E magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 1080A aluminum and the bottom bar is AZ91E magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
75
Elastic (Young's, Tensile) Modulus, GPa 68
46
Elongation at Break, % 2.3 to 34
2.5 to 6.2
Fatigue Strength, MPa 18 to 50
81 to 85
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 49 to 81
89 to 150
Tensile Strength: Ultimate (UTS), MPa 74 to 140
160 to 260
Tensile Strength: Yield (Proof), MPa 17 to 120
96 to 130

Thermal Properties

Latent Heat of Fusion, J/g 400
350
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 640
500
Specific Heat Capacity, J/kg-K 900
990
Thermal Conductivity, W/m-K 230
84
Thermal Expansion, µm/m-K 23
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 62
10 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 200
52 to 60

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.7
1.7
Embodied Carbon, kg CO2/kg material 8.3
22
Embodied Energy, MJ/kg 160
160
Embodied Water, L/kg 1200
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 19
3.4 to 12
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
100 to 190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
69
Strength to Weight: Axial, points 7.6 to 15
25 to 42
Strength to Weight: Bending, points 14 to 22
37 to 53
Thermal Diffusivity, mm2/s 94
49
Thermal Shock Resistance, points 3.3 to 6.4
9.0 to 15

Alloy Composition

Aluminum (Al), % 99.8 to 100
8.1 to 9.3
Copper (Cu), % 0 to 0.030
0 to 0.015
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.15
0 to 0.0050
Magnesium (Mg), % 0 to 0.020
88.8 to 91.3
Manganese (Mn), % 0 to 0.020
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0 to 0.15
0 to 0.2
Titanium (Ti), % 0 to 0.020
0
Zinc (Zn), % 0 to 0.060
0.4 to 1.0
Residuals, % 0
0 to 0.3