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7022-T6 Aluminum vs. AZ91E-T6 Magnesium

7022-T6 aluminum belongs to the aluminum alloys classification, while AZ91E-T6 magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 7022-T6 aluminum and the bottom bar is AZ91E-T6 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
75
Elastic (Young's, Tensile) Modulus, GPa 70
46
Elongation at Break, % 7.8
3.9
Fatigue Strength, MPa 160
84
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
18
Shear Strength, MPa 290
150
Tensile Strength: Ultimate (UTS), MPa 500
260
Tensile Strength: Yield (Proof), MPa 420
130

Thermal Properties

Latent Heat of Fusion, J/g 380
350
Maximum Temperature: Mechanical, °C 200
130
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 480
500
Specific Heat Capacity, J/kg-K 870
990
Thermal Conductivity, W/m-K 140
84
Thermal Expansion, µm/m-K 24
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
11
Electrical Conductivity: Equal Weight (Specific), % IACS 65
58

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 2.9
1.7
Embodied Carbon, kg CO2/kg material 8.5
22
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1130
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
190
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
69
Strength to Weight: Axial, points 48
42
Strength to Weight: Bending, points 48
53
Thermal Diffusivity, mm2/s 54
49
Thermal Shock Resistance, points 22
15

Alloy Composition

Aluminum (Al), % 87.9 to 92.4
8.1 to 9.3
Chromium (Cr), % 0.1 to 0.3
0
Copper (Cu), % 0.5 to 1.0
0 to 0.015
Iron (Fe), % 0 to 0.5
0 to 0.0050
Magnesium (Mg), % 2.6 to 3.7
88.8 to 91.3
Manganese (Mn), % 0.1 to 0.4
0.17 to 0.35
Nickel (Ni), % 0
0 to 0.0010
Silicon (Si), % 0 to 0.5
0 to 0.2
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 4.3 to 5.2
0.4 to 1.0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.3