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7475 Aluminum vs. AWS BAg-20

7475 aluminum belongs to the aluminum alloys classification, while AWS BAg-20 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (14, 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 7475 aluminum and the bottom bar is AWS BAg-20.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
93
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 26
35
Tensile Strength: Ultimate (UTS), MPa 530 to 590
160

Thermal Properties

Latent Heat of Fusion, J/g 380
150
Melting Completion (Liquidus), °C 640
770
Melting Onset (Solidus), °C 480
680
Specific Heat Capacity, J/kg-K 870
340
Thermal Expansion, µm/m-K 23
21

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.6
Embodied Carbon, kg CO2/kg material 8.2
30
Embodied Energy, MJ/kg 150
480

Common Calculations

Stiffness to Weight: Axial, points 13
6.0
Stiffness to Weight: Bending, points 46
17
Strength to Weight: Axial, points 49 to 55
5.1
Strength to Weight: Bending, points 48 to 52
7.6
Thermal Shock Resistance, points 23 to 26
5.9

Alloy Composition


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Aluminum (Al), % 88.6 to 91.6
0
Chromium (Cr), % 0.18 to 0.25
0
Copper (Cu), % 1.2 to 1.9
37 to 39
Iron (Fe), % 0 to 0.12
0
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.060
0
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
29 to 31
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.1 to 6.2
30 to 34
Residuals, % 0 to 0.15
0 to 0.15