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EN AC-71100 Aluminum vs. AWS ER120S-1

EN AC-71100 aluminum belongs to the aluminum alloys classification, while AWS ER120S-1 belongs to the iron alloys. There are 25 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 EN AC-71100 aluminum and the bottom bar is AWS ER120S-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
17
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260
930
Tensile Strength: Yield (Proof), MPa 230
830

Thermal Properties

Latent Heat of Fusion, J/g 490
260
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 97
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 7.4
1.9
Embodied Energy, MJ/kg 140
25
Embodied Water, L/kg 1010
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
1850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
33
Strength to Weight: Bending, points 31
27
Thermal Shock Resistance, points 12
27

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0 to 0.1
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
0 to 0.6
Copper (Cu), % 0 to 0.1
0 to 0.25
Iron (Fe), % 0 to 0.3
92.4 to 96.1
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
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), % 7.5 to 9.5
0.25 to 0.6
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0 to 0.1
Vanadium (V), % 0
0 to 0.030
Zinc (Zn), % 9.0 to 10.5
0
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.5