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7020 Aluminum vs. AWS E316L

7020 aluminum belongs to the aluminum alloys classification, while AWS E316L belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 E316L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 8.4 to 14
34
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 190 to 390
550

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 610
1390
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 23
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.9
7.9
Embodied Carbon, kg CO2/kg material 8.3
4.0
Embodied Energy, MJ/kg 150
55
Embodied Water, L/kg 1150
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 18 to 37
19
Strength to Weight: Bending, points 25 to 41
19
Thermal Diffusivity, mm2/s 59
4.0
Thermal Shock Resistance, points 8.3 to 17
14

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0.1 to 0.35
17 to 20
Copper (Cu), % 0 to 0.2
0 to 0.75
Iron (Fe), % 0 to 0.4
58.6 to 69.5
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
11 to 14
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0