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EN AC-21100 Aluminum vs. AWS E33-31

EN AC-21100 aluminum belongs to the aluminum alloys classification, while AWS E33-31 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 EN AC-21100 aluminum and the bottom bar is AWS E33-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
210
Elongation at Break, % 6.2 to 7.3
29
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
81
Tensile Strength: Ultimate (UTS), MPa 340 to 350
810

Thermal Properties

Latent Heat of Fusion, J/g 390
320
Melting Completion (Liquidus), °C 670
1380
Melting Onset (Solidus), °C 550
1330
Specific Heat Capacity, J/kg-K 880
480
Thermal Expansion, µm/m-K 23
14

Otherwise Unclassified Properties

Base Metal Price, % relative 11
36
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.0
6.0
Embodied Energy, MJ/kg 150
86
Embodied Water, L/kg 1150
260

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 31 to 33
28
Strength to Weight: Bending, points 36 to 37
24
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
31 to 35
Copper (Cu), % 4.2 to 5.2
0.4 to 0.8
Iron (Fe), % 0 to 0.19
24.7 to 34.8
Manganese (Mn), % 0 to 0.55
2.5 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
30 to 32
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.18
0 to 0.9
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0