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5021 Aluminum vs. 2011A Aluminum

Both 5021 aluminum and 2011A aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is 2011A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 1.1 to 3.4
6.8 to 16
Fatigue Strength, MPa 85 to 110
75 to 100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
190 to 250
Tensile Strength: Ultimate (UTS), MPa 300 to 310
310 to 410
Tensile Strength: Yield (Proof), MPa 240 to 270
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 590
550
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
33
Electrical Conductivity: Equal Weight (Specific), % IACS 120
96

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.6
7.9
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
20 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
140 to 670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
44
Strength to Weight: Axial, points 30 to 32
28 to 37
Strength to Weight: Bending, points 37
33 to 40
Thermal Diffusivity, mm2/s 57
49
Thermal Shock Resistance, points 13 to 14
14 to 18

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
91.5 to 95.1
Bismuth (Bi), % 0
0.2 to 0.6
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
4.5 to 6.0
Iron (Fe), % 0 to 0.5
0 to 0.5
Lead (Pb), % 0
0.2 to 0.6
Magnesium (Mg), % 2.2 to 2.8
0
Manganese (Mn), % 0.1 to 0.5
0
Silicon (Si), % 0 to 0.4
0 to 0.4
Zinc (Zn), % 0 to 0.15
0 to 0.3
Residuals, % 0
0 to 0.15