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7021 Aluminum vs. 772.0 Aluminum

Both 7021 aluminum and 772.0 aluminum are aluminum alloys. They have a very high 99% of their average alloy composition in common. There are 29 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 7021 aluminum and the bottom bar is 772.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 9.4
6.3 to 8.4
Fatigue Strength, MPa 150
94 to 160
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 460
260 to 320
Tensile Strength: Yield (Proof), MPa 390
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 200
180
Melting Completion (Liquidus), °C 630
630
Melting Onset (Solidus), °C 510
580
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
3.0
Embodied Carbon, kg CO2/kg material 8.3
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
16 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
350 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
46
Strength to Weight: Axial, points 44
25 to 31
Strength to Weight: Bending, points 45
31 to 36
Thermal Diffusivity, mm2/s 59
58
Thermal Shock Resistance, points 20
11 to 14

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
91.2 to 93.2
Chromium (Cr), % 0 to 0.050
0.060 to 0.2
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 0.4
0 to 0.15
Magnesium (Mg), % 1.2 to 1.8
0.6 to 0.8
Manganese (Mn), % 0 to 0.1
0 to 0.1
Silicon (Si), % 0 to 0.25
0 to 0.15
Titanium (Ti), % 0 to 0.1
0.1 to 0.2
Zinc (Zn), % 5.0 to 6.0
6.0 to 7.0
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15