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7021 Aluminum vs. AWS BAg-36

7021 aluminum belongs to the aluminum alloys classification, while AWS BAg-36 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 7021 aluminum and the bottom bar is AWS BAg-36.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
86
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
32
Tensile Strength: Ultimate (UTS), MPa 460
160

Thermal Properties

Latent Heat of Fusion, J/g 380
140
Melting Completion (Liquidus), °C 630
680
Melting Onset (Solidus), °C 510
650
Specific Heat Capacity, J/kg-K 870
310
Thermal Expansion, µm/m-K 24
21

Otherwise Unclassified Properties

Density, g/cm3 2.9
9.0
Embodied Carbon, kg CO2/kg material 8.3
44
Embodied Energy, MJ/kg 150
700

Common Calculations

Stiffness to Weight: Axial, points 13
5.3
Stiffness to Weight: Bending, points 47
16
Strength to Weight: Axial, points 44
4.9
Strength to Weight: Bending, points 45
7.3
Thermal Shock Resistance, points 20
6.4

Alloy Composition

Aluminum (Al), % 90.7 to 93.7
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.25
26 to 28
Iron (Fe), % 0 to 0.4
0
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 0 to 0.25
0
Silver (Ag), % 0
44 to 46
Tin (Sn), % 0
2.5 to 3.5
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.0 to 6.0
23 to 27
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0
0 to 0.15