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2025 Aluminum vs. AWS ENiCrMo-3

2025 aluminum belongs to the aluminum alloys classification, while AWS ENiCrMo-3 belongs to the nickel alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 2025 aluminum and the bottom bar is AWS ENiCrMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 15
34
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 400
870

Thermal Properties

Latent Heat of Fusion, J/g 400
330
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 520
1430
Specific Heat Capacity, J/kg-K 870
440
Thermal Conductivity, W/m-K 150
11
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 120
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
80
Density, g/cm3 3.0
8.6
Embodied Carbon, kg CO2/kg material 7.9
14
Embodied Energy, MJ/kg 150
190
Embodied Water, L/kg 1130
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 37
28
Strength to Weight: Bending, points 40
24
Thermal Diffusivity, mm2/s 58
2.8
Thermal Shock Resistance, points 18
25

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
20 to 23
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 3.9 to 5.0
0 to 0.5
Iron (Fe), % 0 to 1.0
0 to 7.0
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
55 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.5 to 1.2
0 to 0.75
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0
0 to 0.5