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7021 Aluminum vs. 5754 Aluminum

Both 7021 aluminum and 5754 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 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 5754 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.4
2.0 to 19
Fatigue Strength, MPa 150
66 to 140
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 270
120 to 190
Tensile Strength: Ultimate (UTS), MPa 460
200 to 330
Tensile Strength: Yield (Proof), MPa 390
80 to 280

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 630
650
Melting Onset (Solidus), °C 510
600
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.7
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
6.1 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
47 to 580
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 44
21 to 34
Strength to Weight: Bending, points 45
28 to 39
Thermal Diffusivity, mm2/s 59
54
Thermal Shock Resistance, points 20
8.9 to 14

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
94.2 to 97.4
Chromium (Cr), % 0 to 0.050
0 to 0.3
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 0.4
0 to 0.4
Magnesium (Mg), % 1.2 to 1.8
2.6 to 3.6
Manganese (Mn), % 0 to 0.1
0 to 0.5
Silicon (Si), % 0 to 0.25
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.15
Zinc (Zn), % 5.0 to 6.0
0 to 0.2
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15