MakeItFrom.com
Menu (ESC)

7021 Aluminum vs. 5021 Aluminum

Both 7021 aluminum and 5021 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 7021 aluminum and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.4
1.1 to 3.4
Fatigue Strength, MPa 150
85 to 110
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 270
170
Tensile Strength: Ultimate (UTS), MPa 460
300 to 310
Tensile Strength: Yield (Proof), MPa 390
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 380
400
Maximum Temperature: Mechanical, °C 200
180
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 510
590
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
140
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
35
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

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
8.6
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
3.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
440 to 550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 44
30 to 32
Strength to Weight: Bending, points 45
37
Thermal Diffusivity, mm2/s 59
57
Thermal Shock Resistance, points 20
13 to 14

Alloy Composition


Deprecated: Automatic conversion of false to array is deprecated in /home/public/compare.php on line 452
Aluminum (Al), % 90.7 to 93.7
95.2 to 97.7
Chromium (Cr), % 0 to 0.050
0 to 0.15
Copper (Cu), % 0 to 0.25
0 to 0.15
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 1.2 to 1.8
2.2 to 2.8
Manganese (Mn), % 0 to 0.1
0.1 to 0.5
Silicon (Si), % 0 to 0.25
0 to 0.4
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.0 to 6.0
0 to 0.15
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15