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5754-O Aluminum vs. 7020-O Aluminum

Both 5754-O aluminum and 7020-O aluminum are aluminum alloys. Both are furnished in the annealed condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5754-O aluminum and the bottom bar is 7020-O aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 52
45
Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 19
14
Fatigue Strength, MPa 96
130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 130
110
Tensile Strength: Ultimate (UTS), MPa 210
190
Tensile Strength: Yield (Proof), MPa 90
120

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 190
210
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 600
610
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.7
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32
23
Resilience: Unit (Modulus of Resilience), kJ/m3 60
110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 22
18
Strength to Weight: Bending, points 29
25
Thermal Diffusivity, mm2/s 54
59
Thermal Shock Resistance, points 9.5
8.3

Alloy Composition


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Aluminum (Al), % 94.2 to 97.4
91.2 to 94.8
Chromium (Cr), % 0 to 0.3
0.1 to 0.35
Copper (Cu), % 0 to 0.1
0 to 0.2
Iron (Fe), % 0 to 0.4
0 to 0.4
Magnesium (Mg), % 2.6 to 3.6
1.0 to 1.4
Manganese (Mn), % 0 to 0.5
0.050 to 0.5
Silicon (Si), % 0 to 0.4
0 to 0.35
Titanium (Ti), % 0 to 0.15
0 to 0.25
Zinc (Zn), % 0 to 0.2
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0 to 0.15
0 to 0.15