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AWS ERNiCrCoMo-1 vs. 7178 Aluminum

AWS ERNiCrCoMo-1 belongs to the nickel alloys classification, while 7178 aluminum belongs to the aluminum 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 AWS ERNiCrCoMo-1 and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 28
4.5 to 12
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 81
27
Tensile Strength: Ultimate (UTS), MPa 710
240 to 640

Thermal Properties

Latent Heat of Fusion, J/g 330
370
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1370
480
Specific Heat Capacity, J/kg-K 450
860
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
31
Electrical Conductivity: Equal Weight (Specific), % IACS 1.5
91

Otherwise Unclassified Properties

Base Metal Price, % relative 75
10
Density, g/cm3 8.5
3.1
Embodied Carbon, kg CO2/kg material 10
8.2
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 350
1110

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
45
Strength to Weight: Axial, points 23
21 to 58
Strength to Weight: Bending, points 21
28 to 54
Thermal Diffusivity, mm2/s 3.5
47
Thermal Shock Resistance, points 19
10 to 28

Alloy Composition


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Aluminum (Al), % 0.8 to 1.5
85.4 to 89.5
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 20 to 24
0.18 to 0.28
Cobalt (Co), % 10 to 15
0
Copper (Cu), % 0 to 0.5
1.6 to 2.4
Iron (Fe), % 0 to 3.0
0 to 0.5
Magnesium (Mg), % 0
2.4 to 3.1
Manganese (Mn), % 0 to 1.0
0 to 0.3
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 42.7 to 61.2
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0 to 0.6
0 to 0.2
Zinc (Zn), % 0
6.3 to 7.3
Residuals, % 0 to 0.5
0 to 0.15