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4032 Aluminum vs. 7021 Aluminum

Both 4032 aluminum and 7021 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have 86% 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 4032 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, % 6.7
9.4
Fatigue Strength, MPa 110
150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 28
26
Shear Strength, MPa 260
270
Tensile Strength: Ultimate (UTS), MPa 390
460
Tensile Strength: Yield (Proof), MPa 320
390

Thermal Properties

Latent Heat of Fusion, J/g 570
380
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 570
630
Melting Onset (Solidus), °C 530
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 19
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
38
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.6
2.9
Embodied Carbon, kg CO2/kg material 7.8
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1030
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25
41
Resilience: Unit (Modulus of Resilience), kJ/m3 700
1110
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
47
Strength to Weight: Axial, points 41
44
Strength to Weight: Bending, points 45
45
Thermal Diffusivity, mm2/s 59
59
Thermal Shock Resistance, points 20
20

Alloy Composition

Aluminum (Al), % 81.1 to 87.2
90.7 to 93.7
Chromium (Cr), % 0 to 0.1
0 to 0.050
Copper (Cu), % 0.5 to 1.3
0 to 0.25
Iron (Fe), % 0 to 1.0
0 to 0.4
Magnesium (Mg), % 0.8 to 1.3
1.2 to 1.8
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0.5 to 1.3
0
Silicon (Si), % 11 to 13.5
0 to 0.25
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.25
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0
0 to 0.15