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383.0 Aluminum vs. 7021 Aluminum

Both 383.0 aluminum and 7021 aluminum are aluminum alloys. They have 86% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 383.0 aluminum and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 3.5
9.4
Fatigue Strength, MPa 150
150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
26
Tensile Strength: Ultimate (UTS), MPa 280
460
Tensile Strength: Yield (Proof), MPa 150
390

Thermal Properties

Latent Heat of Fusion, J/g 540
380
Maximum Temperature: Mechanical, °C 170
200
Melting Completion (Liquidus), °C 580
630
Melting Onset (Solidus), °C 540
510
Specific Heat Capacity, J/kg-K 880
870
Thermal Conductivity, W/m-K 96
150
Thermal Expansion, µm/m-K 21
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
38
Electrical Conductivity: Equal Weight (Specific), % IACS 74
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.8
2.9
Embodied Carbon, kg CO2/kg material 7.5
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1030
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.2
41
Resilience: Unit (Modulus of Resilience), kJ/m3 150
1110
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 28
44
Strength to Weight: Bending, points 34
45
Thermal Diffusivity, mm2/s 39
59
Thermal Shock Resistance, points 13
20

Alloy Composition


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Aluminum (Al), % 79.7 to 88.5
90.7 to 93.7
Chromium (Cr), % 0
0 to 0.050
Copper (Cu), % 2.0 to 3.0
0 to 0.25
Iron (Fe), % 0 to 1.3
0 to 0.4
Magnesium (Mg), % 0 to 0.1
1.2 to 1.8
Manganese (Mn), % 0 to 0.5
0 to 0.1
Nickel (Ni), % 0 to 0.3
0
Silicon (Si), % 9.5 to 11.5
0 to 0.25
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 3.0
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0 to 0.5
0 to 0.15