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7021 Aluminum vs. 364.0 Aluminum

Both 7021 aluminum and 364.0 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is 7021 aluminum and the bottom bar is 364.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
72
Elongation at Break, % 9.4
7.5
Fatigue Strength, MPa 150
120
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 270
200
Tensile Strength: Ultimate (UTS), MPa 460
300
Tensile Strength: Yield (Proof), MPa 390
160

Thermal Properties

Latent Heat of Fusion, J/g 380
520
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 630
600
Melting Onset (Solidus), °C 510
560
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
30
Electrical Conductivity: Equal Weight (Specific), % IACS 120
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.9
2.6
Embodied Carbon, kg CO2/kg material 8.3
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1140
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
19
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
53
Strength to Weight: Axial, points 44
31
Strength to Weight: Bending, points 45
38
Thermal Diffusivity, mm2/s 59
51
Thermal Shock Resistance, points 20
14

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
87.2 to 92
Beryllium (Be), % 0
0.020 to 0.040
Chromium (Cr), % 0 to 0.050
0.25 to 0.5
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 0 to 0.4
0 to 1.5
Magnesium (Mg), % 1.2 to 1.8
0.2 to 0.4
Manganese (Mn), % 0 to 0.1
0 to 0.1
Nickel (Ni), % 0
0 to 0.15
Silicon (Si), % 0 to 0.25
7.5 to 9.5
Tin (Sn), % 0
0 to 0.15
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