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7021 Aluminum vs. 356.0 Aluminum

Both 7021 aluminum and 356.0 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 7021 aluminum and the bottom bar is 356.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.4
2.0 to 3.8
Fatigue Strength, MPa 150
55 to 75
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 270
140 to 190
Tensile Strength: Ultimate (UTS), MPa 460
160 to 240
Tensile Strength: Yield (Proof), MPa 390
100 to 190

Thermal Properties

Latent Heat of Fusion, J/g 380
500
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 630
620
Melting Onset (Solidus), °C 510
570
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
150 to 170
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
40 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140 to 150

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
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
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
3.2 to 8.2
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
70 to 250
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 47
53
Strength to Weight: Axial, points 44
17 to 26
Strength to Weight: Bending, points 45
25 to 33
Thermal Diffusivity, mm2/s 59
64 to 71
Thermal Shock Resistance, points 20
7.6 to 11

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
90.1 to 93.3
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.4
0 to 0.6
Magnesium (Mg), % 1.2 to 1.8
0.2 to 0.45
Manganese (Mn), % 0 to 0.1
0 to 0.35
Silicon (Si), % 0 to 0.25
6.5 to 7.5
Titanium (Ti), % 0 to 0.1
0 to 0.25
Zinc (Zn), % 5.0 to 6.0
0 to 0.35
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15