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7049 Aluminum vs. AWS ENiCrMo-3

7049 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 7049 aluminum and the bottom bar is AWS ENiCrMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.2 to 7.0
34
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 510 to 530
870

Thermal Properties

Latent Heat of Fusion, J/g 370
330
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 480
1430
Specific Heat Capacity, J/kg-K 860
440
Thermal Conductivity, W/m-K 130
11
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
80
Density, g/cm3 3.1
8.6
Embodied Carbon, kg CO2/kg material 8.1
14
Embodied Energy, MJ/kg 140
190
Embodied Water, L/kg 1110
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
23
Strength to Weight: Axial, points 46 to 47
28
Strength to Weight: Bending, points 46 to 47
24
Thermal Diffusivity, mm2/s 51
2.8
Thermal Shock Resistance, points 22 to 23
25

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0.1 to 0.22
20 to 23
Cobalt (Co), % 0
0 to 0.12
Copper (Cu), % 1.2 to 1.9
0 to 0.5
Iron (Fe), % 0 to 0.35
0 to 7.0
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
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 to 0.25
0 to 0.75
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0
0 to 0.5