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7021 Aluminum vs. 5059 Aluminum

Both 7021 aluminum and 5059 aluminum are aluminum alloys. They have a moderately 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 7021 aluminum and the bottom bar is 5059 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 9.4
11 to 25
Fatigue Strength, MPa 150
170 to 240
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 270
220 to 250
Tensile Strength: Ultimate (UTS), MPa 460
350 to 410
Tensile Strength: Yield (Proof), MPa 390
170 to 300

Thermal Properties

Latent Heat of Fusion, J/g 380
390
Maximum Temperature: Mechanical, °C 200
210
Melting Completion (Liquidus), °C 630
650
Melting Onset (Solidus), °C 510
510
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
110
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
95

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
9.1
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
220 to 650
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 44
36 to 42
Strength to Weight: Bending, points 45
41 to 45
Thermal Diffusivity, mm2/s 59
44
Thermal Shock Resistance, points 20
16 to 18

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
89.9 to 94
Chromium (Cr), % 0 to 0.050
0 to 0.25
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 1.2 to 1.8
5.0 to 6.0
Manganese (Mn), % 0 to 0.1
0.6 to 1.2
Silicon (Si), % 0 to 0.25
0 to 0.45
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 5.0 to 6.0
0.4 to 0.9
Zirconium (Zr), % 0.080 to 0.18
0.050 to 0.25
Residuals, % 0 to 0.15
0 to 0.15