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7129 Aluminum vs. AWS ENiCrFe-3

7129 Aluminum belongs to the aluminum alloys classification, while AWS ENiCrFe-3 belongs to the nickel alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, 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 7129 Aluminum and the bottom bar is AWS ENiCrFe-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0 to 9.1
34
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 26
74
Tensile Strength: Ultimate (UTS), MPa 430
630

Thermal Properties

Latent Heat of Fusion, J/g 380
310
Melting Completion (Liquidus), °C 630
1370
Melting Onset (Solidus), °C 510
1320
Specific Heat Capacity, J/kg-K 880
460
Thermal Expansion, µm/m-K 24
13

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
65
Density, g/cm3 2.9
8.4
Embodied Carbon, kg CO2/kg material 8.3
11
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
260

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
23
Strength to Weight: Axial, points 41
21
Strength to Weight: Bending, points 43 to 44
19
Thermal Shock Resistance, points 19
18

Alloy Composition

Aluminum (Al), % 91 to 94
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
13 to 17
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 0.5 to 0.9
0 to 0.5
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.3
0 to 10
Magnesium (Mg), % 1.3 to 2.0
0
Manganese (Mn), % 0 to 0.1
5.0 to 9.5
Nickel (Ni), % 0
52 to 81
Niobium (Nb), % 0
1.0 to 2.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0
0 to 0.3
Titanium (Ti), % 0 to 0.050
0 to 1.0
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 4.2 to 5.2
0
Residuals, % 0
0 to 0.5