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7022-T651 Aluminum vs. 7075-T651 Aluminum

Both 7022-T651 aluminum and 7075-T651 aluminum are aluminum alloys. Both are furnished in the T651 temper. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 7022-T651 aluminum and the bottom bar is 7075-T651 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
150
Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 6.3
8.2
Fatigue Strength, MPa 140
160
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 290
330
Tensile Strength: Ultimate (UTS), MPa 490
550
Tensile Strength: Yield (Proof), MPa 390
460

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 200
200
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 480
480
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
33
Electrical Conductivity: Equal Weight (Specific), % IACS 65
98

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 2.9
3.0
Embodied Carbon, kg CO2/kg material 8.5
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
43
Resilience: Unit (Modulus of Resilience), kJ/m3 1100
1510
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
46
Strength to Weight: Axial, points 47
51
Strength to Weight: Bending, points 47
49
Thermal Diffusivity, mm2/s 54
50
Thermal Shock Resistance, points 21
24

Alloy Composition


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Aluminum (Al), % 87.9 to 92.4
86.9 to 91.4
Chromium (Cr), % 0.1 to 0.3
0.18 to 0.28
Copper (Cu), % 0.5 to 1.0
1.2 to 2.0
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 2.6 to 3.7
2.1 to 2.9
Manganese (Mn), % 0.1 to 0.4
0 to 0.3
Silicon (Si), % 0 to 0.5
0 to 0.4
Titanium (Ti), % 0 to 0.2
0 to 0.2
Zinc (Zn), % 4.3 to 5.2
5.1 to 6.1
Zirconium (Zr), % 0 to 0.2
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15