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771.0-F Aluminum vs. As-fabricated Nickel 718

771.0-F aluminum belongs to the aluminum alloys classification, while as-fabricated nickel 718 belongs to the nickel alloys. There are 29 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 771.0-F aluminum and the bottom bar is as-fabricated nickel 718.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 2.6
50
Fatigue Strength, MPa 180
460
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 300
930
Tensile Strength: Yield (Proof), MPa 250
510

Thermal Properties

Latent Heat of Fusion, J/g 380
310
Maximum Temperature: Mechanical, °C 180
980
Melting Completion (Liquidus), °C 630
1340
Melting Onset (Solidus), °C 620
1260
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 140
11
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 82
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
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 1130
250

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.5
390
Resilience: Unit (Modulus of Resilience), kJ/m3 460
660
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
23
Strength to Weight: Axial, points 28
31
Strength to Weight: Bending, points 34
25
Thermal Diffusivity, mm2/s 54
3.0
Thermal Shock Resistance, points 13
27

Alloy Composition

Aluminum (Al), % 90.5 to 92.5
0.2 to 0.8
Boron (B), % 0
0 to 0.0060
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0.060 to 0.2
17 to 21
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.1
0 to 0.3
Iron (Fe), % 0 to 0.15
11.1 to 24.6
Magnesium (Mg), % 0.8 to 1.0
0
Manganese (Mn), % 0 to 0.1
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 0.15
0 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0.1 to 0.2
0.65 to 1.2
Zinc (Zn), % 6.5 to 7.5
0
Residuals, % 0 to 0.15
0