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6081 Aluminum vs. N06920 Nickel

6081 aluminum belongs to the aluminum alloys classification, while N06920 nickel belongs to the nickel alloys. 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 6081 aluminum and the bottom bar is N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 9.0
39
Fatigue Strength, MPa 110
220
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
82
Shear Strength, MPa 180
500
Tensile Strength: Ultimate (UTS), MPa 310
730
Tensile Strength: Yield (Proof), MPa 270
270

Thermal Properties

Latent Heat of Fusion, J/g 410
320
Maximum Temperature: Mechanical, °C 160
990
Melting Completion (Liquidus), °C 640
1500
Melting Onset (Solidus), °C 610
1440
Specific Heat Capacity, J/kg-K 900
440
Thermal Conductivity, W/m-K 180
11
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 160
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
55
Density, g/cm3 2.7
8.6
Embodied Carbon, kg CO2/kg material 8.3
9.4
Embodied Energy, MJ/kg 150
130
Embodied Water, L/kg 1180
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
230
Resilience: Unit (Modulus of Resilience), kJ/m3 540
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
23
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 37
21
Thermal Diffusivity, mm2/s 74
2.8
Thermal Shock Resistance, points 14
19

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.1
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
17 to 20
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0.1 to 0.45
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
36.9 to 53.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.7 to 1.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0