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5021 Aluminum vs. 7020 Aluminum

Both 5021 aluminum and 7020 aluminum are aluminum alloys. They have a very high 95% 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 5021 aluminum and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 1.1 to 3.4
8.4 to 14
Fatigue Strength, MPa 85 to 110
110 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
110 to 230
Tensile Strength: Ultimate (UTS), MPa 300 to 310
190 to 390
Tensile Strength: Yield (Proof), MPa 240 to 270
120 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
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 140
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
39
Electrical Conductivity: Equal Weight (Specific), % IACS 120
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 8.6
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
23 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
110 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 30 to 32
18 to 37
Strength to Weight: Bending, points 37
25 to 41
Thermal Diffusivity, mm2/s 57
59
Thermal Shock Resistance, points 13 to 14
8.3 to 17

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
91.2 to 94.8
Chromium (Cr), % 0 to 0.15
0.1 to 0.35
Copper (Cu), % 0 to 0.15
0 to 0.2
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 2.2 to 2.8
1.0 to 1.4
Manganese (Mn), % 0.1 to 0.5
0.050 to 0.5
Silicon (Si), % 0 to 0.4
0 to 0.35
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.15
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0
0 to 0.15