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7022 Aluminum vs. 6081 Aluminum

Both 7022 aluminum and 6081 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 7022 aluminum and the bottom bar is 6081 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 6.3 to 8.0
9.0
Fatigue Strength, MPa 140 to 170
110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 290 to 320
180
Tensile Strength: Ultimate (UTS), MPa 490 to 540
310
Tensile Strength: Yield (Proof), MPa 390 to 460
270

Thermal Properties

Latent Heat of Fusion, J/g 380
410
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 480
610
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 140
180
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
47
Electrical Conductivity: Equal Weight (Specific), % IACS 65
160

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.5
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 40
27
Resilience: Unit (Modulus of Resilience), kJ/m3 1100 to 1500
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 47 to 51
32
Strength to Weight: Bending, points 47 to 50
37
Thermal Diffusivity, mm2/s 54
74
Thermal Shock Resistance, points 21 to 23
14

Alloy Composition


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Aluminum (Al), % 87.9 to 92.4
96.3 to 98.6
Chromium (Cr), % 0.1 to 0.3
0 to 0.1
Copper (Cu), % 0.5 to 1.0
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 2.6 to 3.7
0.6 to 1.0
Manganese (Mn), % 0.1 to 0.4
0.1 to 0.45
Silicon (Si), % 0 to 0.5
0.7 to 1.1
Titanium (Ti), % 0 to 0.2
0 to 0.15
Zinc (Zn), % 4.3 to 5.2
0 to 0.2
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0 to 0.15