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5051A Aluminum vs. Nickel 686

5051A aluminum belongs to the aluminum alloys classification, while nickel 686 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 5051A aluminum and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
220
Elongation at Break, % 18 to 21
51
Fatigue Strength, MPa 51 to 61
410
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
77
Shear Strength, MPa 110
560
Tensile Strength: Ultimate (UTS), MPa 170
780
Tensile Strength: Yield (Proof), MPa 56
350

Thermal Properties

Latent Heat of Fusion, J/g 400
320
Maximum Temperature: Mechanical, °C 190
980
Melting Completion (Liquidus), °C 640
1380
Melting Onset (Solidus), °C 610
1340
Specific Heat Capacity, J/kg-K 900
420
Thermal Conductivity, W/m-K 150
9.8
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
70
Density, g/cm3 2.7
9.0
Embodied Carbon, kg CO2/kg material 8.5
12
Embodied Energy, MJ/kg 150
170
Embodied Water, L/kg 1190
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 27
320
Resilience: Unit (Modulus of Resilience), kJ/m3 23
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
22
Strength to Weight: Axial, points 17 to 18
24
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 63
2.6
Thermal Shock Resistance, points 7.6
21

Alloy Composition

Aluminum (Al), % 96.1 to 98.6
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0 to 0.3
19 to 23
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.45
0 to 5.0
Magnesium (Mg), % 1.4 to 2.1
0
Manganese (Mn), % 0 to 0.25
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 0
49.5 to 63
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
0 to 0.080
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.1
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0