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EN AC-21100 Aluminum vs. AWS ER80S-Ni3

EN AC-21100 aluminum belongs to the aluminum alloys classification, while AWS ER80S-Ni3 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 EN AC-21100 aluminum and the bottom bar is AWS ER80S-Ni3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 6.2 to 7.3
27
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 340 to 350
630
Tensile Strength: Yield (Proof), MPa 210 to 240
530

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Melting Completion (Liquidus), °C 670
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 130
51
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
4.0
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.7
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1150
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
160
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
740
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 31 to 33
22
Strength to Weight: Bending, points 36 to 37
21
Thermal Diffusivity, mm2/s 48
14
Thermal Shock Resistance, points 15
19

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0
Carbon (C), % 0
0 to 0.12
Copper (Cu), % 4.2 to 5.2
0 to 0.35
Iron (Fe), % 0 to 0.19
93.2 to 96.6
Manganese (Mn), % 0 to 0.55
0 to 1.3
Nickel (Ni), % 0
3.0 to 3.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.18
0.4 to 0.8
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0
0 to 0.5