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EN AC-21100 Aluminum vs. AWS ERNiFeCr-2

EN AC-21100 aluminum belongs to the aluminum alloys classification, while AWS ERNiFeCr-2 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, 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 ERNiFeCr-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 6.2 to 7.3
28
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
75
Tensile Strength: Ultimate (UTS), MPa 340 to 350
1300

Thermal Properties

Latent Heat of Fusion, J/g 390
310
Melting Completion (Liquidus), °C 670
1460
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 880
450
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
75
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 8.0
13
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1150
250

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 31 to 33
43
Strength to Weight: Bending, points 36 to 37
32
Thermal Diffusivity, mm2/s 48
3.2
Thermal Shock Resistance, points 15
38

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
0.2 to 0.8
Boron (B), % 0
0 to 0.0030
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 21
Copper (Cu), % 4.2 to 5.2
0 to 0.3
Iron (Fe), % 0 to 0.19
11.6 to 24.6
Manganese (Mn), % 0 to 0.55
0 to 0.35
Molybdenum (Mo), % 0
2.8 to 3.3
Nickel (Ni), % 0
50 to 55
Niobium (Nb), % 0
4.8 to 5.5
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.18
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.15 to 0.3
0.65 to 1.2
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0
0 to 0.5