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5182-O Aluminum vs. 7020-O Aluminum

Both 5182-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 5182-O aluminum and the bottom bar is 7020-O aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 69
45
Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 12
14
Fatigue Strength, MPa 130
130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Shear Strength, MPa 170
110
Tensile Strength: Ultimate (UTS), MPa 280
190
Tensile Strength: Yield (Proof), MPa 130
120

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 180
210
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 590
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 28
39
Electrical Conductivity: Equal Weight (Specific), % IACS 94
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 8.9
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28
23
Resilience: Unit (Modulus of Resilience), kJ/m3 120
110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
47
Strength to Weight: Axial, points 29
18
Strength to Weight: Bending, points 36
25
Thermal Diffusivity, mm2/s 53
59
Thermal Shock Resistance, points 12
8.3

Alloy Composition


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Aluminum (Al), % 93.2 to 95.8
91.2 to 94.8
Chromium (Cr), % 0 to 0.1
0.1 to 0.35
Copper (Cu), % 0 to 0.15
0 to 0.2
Iron (Fe), % 0 to 0.35
0 to 0.4
Magnesium (Mg), % 4.0 to 5.0
1.0 to 1.4
Manganese (Mn), % 0.2 to 0.5
0.050 to 0.5
Silicon (Si), % 0 to 0.2
0 to 0.35
Titanium (Ti), % 0 to 0.1
0 to 0.25
Zinc (Zn), % 0 to 0.25
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0 to 0.15
0 to 0.15