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7003 Aluminum vs. AWS ER120S-1

7003 aluminum belongs to the aluminum alloys classification, while AWS ER120S-1 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (3, 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 ER120S-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11
17
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 350 to 390
930
Tensile Strength: Yield (Proof), MPa 300 to 310
830

Thermal Properties

Latent Heat of Fusion, J/g 380
260
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 510
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 150
46
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 110
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.2
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.9
Embodied Energy, MJ/kg 150
25
Embodied Water, L/kg 1140
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
150
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
1850
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 33 to 37
33
Strength to Weight: Bending, points 37 to 40
27
Thermal Diffusivity, mm2/s 59
13
Thermal Shock Resistance, points 15 to 17
27

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0 to 0.1
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.2
0 to 0.6
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 0 to 0.35
92.4 to 96.1
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
1.4 to 1.8
Molybdenum (Mo), % 0
0.3 to 0.65
Nickel (Ni), % 0
2.0 to 2.8
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.3
0.25 to 0.6
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0 to 0.1
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0 to 0.1
Residuals, % 0
0 to 0.5