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7020 Aluminum vs. AWS BAg-1

7020 aluminum belongs to the aluminum alloys classification, while AWS BAg-1 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 7020 aluminum and the bottom bar is AWS BAg-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
75
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Tensile Strength: Ultimate (UTS), MPa 190 to 390
170

Thermal Properties

Latent Heat of Fusion, J/g 380
110
Melting Completion (Liquidus), °C 650
620
Melting Onset (Solidus), °C 610
610
Specific Heat Capacity, J/kg-K 880
280
Thermal Expansion, µm/m-K 23
23

Otherwise Unclassified Properties

Density, g/cm3 2.9
9.2
Embodied Carbon, kg CO2/kg material 8.3
44
Embodied Energy, MJ/kg 150
690

Common Calculations

Stiffness to Weight: Axial, points 13
4.6
Stiffness to Weight: Bending, points 47
15
Strength to Weight: Axial, points 18 to 37
5.1
Strength to Weight: Bending, points 25 to 41
7.4
Thermal Shock Resistance, points 8.3 to 17
7.0

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Cadmium (Cd), % 0
23 to 25
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
14 to 16
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Silicon (Si), % 0 to 0.35
0
Silver (Ag), % 0
44 to 46
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
14 to 18
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0
0 to 0.15