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Nickel 685 vs. 5456 Aluminum

Nickel 685 belongs to the nickel alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 nickel 685 and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 17
11 to 18
Fatigue Strength, MPa 470
130 to 210
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 77
26
Shear Strength, MPa 770
190 to 210
Tensile Strength: Ultimate (UTS), MPa 1250
320 to 340
Tensile Strength: Yield (Proof), MPa 850
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1000
190
Melting Completion (Liquidus), °C 1380
640
Melting Onset (Solidus), °C 1330
570
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 12
24

Otherwise Unclassified Properties

Base Metal Price, % relative 75
9.5
Density, g/cm3 8.4
2.7
Embodied Carbon, kg CO2/kg material 10
9.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 340
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 1820
170 to 470
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
50
Strength to Weight: Axial, points 42
33 to 35
Strength to Weight: Bending, points 31
38 to 40
Thermal Diffusivity, mm2/s 3.3
48
Thermal Shock Resistance, points 37
14 to 15

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
92 to 94.8
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.1
0
Chromium (Cr), % 18 to 21
0.050 to 0.2
Cobalt (Co), % 12 to 15
0
Copper (Cu), % 0 to 0.5
0 to 0.1
Iron (Fe), % 0 to 2.0
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 3.5 to 5.0
0
Nickel (Ni), % 49.6 to 62.5
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 2.8 to 3.3
0 to 0.2
Zinc (Zn), % 0.020 to 0.12
0 to 0.25
Residuals, % 0
0 to 0.15