MakeItFrom.com
Menu (ESC)

7020 Aluminum vs. AWS E320

7020 aluminum belongs to the aluminum alloys classification, while AWS E320 belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 E320.

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
77
Tensile Strength: Ultimate (UTS), MPa 190 to 390
620

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Melting Completion (Liquidus), °C 650
1410
Melting Onset (Solidus), °C 610
1360
Specific Heat Capacity, J/kg-K 880
460
Thermal Expansion, µm/m-K 23
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
38
Density, g/cm3 2.9
8.2
Embodied Carbon, kg CO2/kg material 8.3
6.5
Embodied Energy, MJ/kg 150
91
Embodied Water, L/kg 1150
220

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 18 to 37
21
Strength to Weight: Bending, points 25 to 41
20
Thermal Shock Resistance, points 8.3 to 17
16

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0.1 to 0.35
19 to 21
Copper (Cu), % 0 to 0.2
3.0 to 4.0
Iron (Fe), % 0 to 0.4
31.8 to 43.5
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
32 to 36
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 0.6
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