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7021 Aluminum vs. AWS BAg-10

7021 aluminum belongs to the aluminum alloys classification, while AWS BAg-10 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
82
Poisson's Ratio 0.32
0.35
Shear Modulus, GPa 26
30
Tensile Strength: Ultimate (UTS), MPa 460
140

Thermal Properties

Latent Heat of Fusion, J/g 380
130
Melting Completion (Liquidus), °C 630
740
Melting Onset (Solidus), °C 510
690
Specific Heat Capacity, J/kg-K 870
280
Thermal Expansion, µm/m-K 24
20

Otherwise Unclassified Properties

Density, g/cm3 2.9
9.8

Common Calculations

Stiffness to Weight: Axial, points 13
4.6
Stiffness to Weight: Bending, points 47
15
Strength to Weight: Axial, points 44
4.0
Strength to Weight: Bending, points 45
6.1
Thermal Shock Resistance, points 20
6.2

Alloy Composition


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Aluminum (Al), % 90.7 to 93.7
0
Chromium (Cr), % 0 to 0.050
0
Copper (Cu), % 0 to 0.25
19 to 21
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
69 to 71
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 5.0 to 6.0
8.0 to 12
Zirconium (Zr), % 0.080 to 0.18
0
Residuals, % 0 to 0.15
0 to 0.15