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7020 Aluminum vs. AWS BVAu-7

7020 aluminum belongs to the aluminum alloys classification, while AWS BVAu-7 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (17, 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 BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
130
Poisson's Ratio 0.33
0.38
Shear Modulus, GPa 26
45
Tensile Strength: Ultimate (UTS), MPa 190 to 390
200

Thermal Properties

Latent Heat of Fusion, J/g 380
140
Melting Completion (Liquidus), °C 650
1120
Melting Onset (Solidus), °C 610
1100
Specific Heat Capacity, J/kg-K 880
240
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Density, g/cm3 2.9
15

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 47
11
Strength to Weight: Axial, points 18 to 37
3.7
Strength to Weight: Bending, points 25 to 41
5.1
Thermal Shock Resistance, points 8.3 to 17
8.9

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Chromium (Cr), % 0.1 to 0.35
0
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 0 to 0.2
0
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 0 to 0.4
0
Lead (Pb), % 0
0 to 0.0020
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0
Nickel (Ni), % 0
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0
0 to 0.0020
Silicon (Si), % 0 to 0.35
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0 to 0.0010
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0