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7003 Aluminum vs. AWS E320LR

7003 aluminum belongs to the aluminum alloys classification, while AWS E320LR belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (11, 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 7003 aluminum and the bottom bar is AWS E320LR.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 11
34
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 350 to 390
580

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Melting Completion (Liquidus), °C 630
1410
Melting Onset (Solidus), °C 510
1360
Specific Heat Capacity, J/kg-K 870
460
Thermal Expansion, µm/m-K 24
14

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 2.9
8.2
Embodied Carbon, kg CO2/kg material 8.1
6.2
Embodied Energy, MJ/kg 150
87
Embodied Water, L/kg 1140
220

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 33 to 37
20
Strength to Weight: Bending, points 37 to 40
19
Thermal Shock Resistance, points 15 to 17
15

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.2
19 to 21
Copper (Cu), % 0 to 0.2
3.0 to 4.0
Iron (Fe), % 0 to 0.35
32.7 to 42.5
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
1.5 to 2.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
32 to 36
Niobium (Nb), % 0
0 to 0.4
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.3
0 to 0.3
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0