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7021 Aluminum vs. 850.0 Aluminum

Both 7021 aluminum and 850.0 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 7021 aluminum and the bottom bar is 850.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 9.4
7.9
Fatigue Strength, MPa 150
59
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 270
100
Tensile Strength: Ultimate (UTS), MPa 460
140
Tensile Strength: Yield (Proof), MPa 390
76

Thermal Properties

Latent Heat of Fusion, J/g 380
380
Maximum Temperature: Mechanical, °C 200
190
Melting Completion (Liquidus), °C 630
650
Melting Onset (Solidus), °C 510
370
Specific Heat Capacity, J/kg-K 870
850
Thermal Conductivity, W/m-K 150
180
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
47
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 2.9
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.5
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1140
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
9.1
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
42
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 47
44
Strength to Weight: Axial, points 44
12
Strength to Weight: Bending, points 45
19
Thermal Diffusivity, mm2/s 59
69
Thermal Shock Resistance, points 20
6.1

Alloy Composition

Aluminum (Al), % 90.7 to 93.7
88.3 to 93.1
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.25
0.7 to 1.3
Iron (Fe), % 0 to 0.4
0 to 0.7
Magnesium (Mg), % 1.2 to 1.8
0 to 0.1
Manganese (Mn), % 0 to 0.1
0 to 0.1
Nickel (Ni), % 0
0.7 to 1.3
Silicon (Si), % 0 to 0.25
0 to 0.7
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 5.0 to 6.0
0
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0
0 to 0.3