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7021 Aluminum vs. 5083 Aluminum

Both 7021 aluminum and 5083 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 7021 aluminum and the bottom bar is 5083 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.4
1.1 to 17
Fatigue Strength, MPa 150
93 to 190
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 270
170 to 220
Tensile Strength: Ultimate (UTS), MPa 460
290 to 390
Tensile Strength: Yield (Proof), MPa 390
110 to 340

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
580
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
96

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.9
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
4.2 to 42
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
95 to 860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 44
29 to 40
Strength to Weight: Bending, points 45
36 to 44
Thermal Diffusivity, mm2/s 59
48
Thermal Shock Resistance, points 20
12 to 17

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
92.4 to 95.6
Chromium (Cr), % 0 to 0.050
0.050 to 0.25
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 0 to 0.4
0 to 0.4
Magnesium (Mg), % 1.2 to 1.8
4.0 to 4.9
Manganese (Mn), % 0 to 0.1
0.4 to 1.0
Silicon (Si), % 0 to 0.25
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.15
Zinc (Zn), % 5.0 to 6.0
0 to 0.25
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15