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Nickel 690 vs. 2618A Aluminum

Nickel 690 belongs to the nickel alloys classification, while 2618A aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 690 and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 3.4 to 34
4.5
Fatigue Strength, MPa 180 to 300
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Shear Strength, MPa 420 to 570
260
Tensile Strength: Ultimate (UTS), MPa 640 to 990
440
Tensile Strength: Yield (Proof), MPa 250 to 760
410

Thermal Properties

Latent Heat of Fusion, J/g 320
390
Maximum Temperature: Mechanical, °C 1010
230
Melting Completion (Liquidus), °C 1380
670
Melting Onset (Solidus), °C 1340
560
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 14
150
Thermal Expansion, µm/m-K 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
37
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
110

Otherwise Unclassified Properties

Base Metal Price, % relative 50
11
Density, g/cm3 8.3
3.0
Embodied Carbon, kg CO2/kg material 8.2
8.4
Embodied Energy, MJ/kg 120
150
Embodied Water, L/kg 290
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 170
19
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 1440
1180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 21 to 33
41
Strength to Weight: Bending, points 20 to 27
44
Thermal Diffusivity, mm2/s 3.5
59
Thermal Shock Resistance, points 16 to 25
19

Alloy Composition

Aluminum (Al), % 0
91.5 to 95.2
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 27 to 31
0
Copper (Cu), % 0 to 0.5
1.8 to 2.7
Iron (Fe), % 7.0 to 11
0.9 to 1.4
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 0.5
0 to 0.25
Nickel (Ni), % 58 to 66
0.8 to 1.4
Silicon (Si), % 0 to 0.5
0.15 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.15
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15