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7020 Aluminum vs. AWS E70C-B2L

7020 aluminum belongs to the aluminum alloys classification, while AWS E70C-B2L belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 E70C-B2L.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 8.4 to 14
21
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 190 to 390
580
Tensile Strength: Yield (Proof), MPa 120 to 310
460

Thermal Properties

Latent Heat of Fusion, J/g 380
260
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
39
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.6
Embodied Energy, MJ/kg 150
22
Embodied Water, L/kg 1150
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
110
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 18 to 37
20
Strength to Weight: Bending, points 25 to 41
20
Thermal Diffusivity, mm2/s 59
11
Thermal Shock Resistance, points 8.3 to 17
17

Alloy Composition


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Aluminum (Al), % 91.2 to 94.8
0
Carbon (C), % 0
0 to 0.050
Chromium (Cr), % 0.1 to 0.35
1.0 to 1.5
Copper (Cu), % 0 to 0.2
0 to 0.35
Iron (Fe), % 0 to 0.4
95.1 to 98
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0.4 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.65
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.35
0.25 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0 to 0.5