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5021 Aluminum vs. 7116 Aluminum

Both 5021 aluminum and 7116 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is 7116 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 1.1 to 3.4
7.8
Fatigue Strength, MPa 85 to 110
160
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
220
Tensile Strength: Ultimate (UTS), MPa 300 to 310
370
Tensile Strength: Yield (Proof), MPa 240 to 270
330

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
520
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
46
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

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
8.2
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
28
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
790
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 30 to 32
35
Strength to Weight: Bending, points 37
39
Thermal Diffusivity, mm2/s 57
58
Thermal Shock Resistance, points 13 to 14
16

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
91.5 to 94.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0.5 to 1.1
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.5
0 to 0.3
Magnesium (Mg), % 2.2 to 2.8
0.8 to 1.4
Manganese (Mn), % 0.1 to 0.5
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.15
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.15
4.2 to 5.2
Residuals, % 0
0 to 0.15