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R31537 Cobalt vs. N06025 Nickel

R31537 cobalt belongs to the cobalt alloys classification, while N06025 nickel belongs to the nickel alloys. They have a modest 26% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R31537 cobalt and the bottom bar is N06025 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 14 to 23
32
Fatigue Strength, MPa 310 to 480
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 87
76
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
760
Tensile Strength: Yield (Proof), MPa 590 to 940
310

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1360
1350
Melting Onset (Solidus), °C 1290
1300
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.2
Embodied Carbon, kg CO2/kg material 8.1
8.4
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 530
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
190
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
240
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33 to 44
26
Strength to Weight: Bending, points 26 to 32
22
Thermal Diffusivity, mm2/s 3.4
2.9
Thermal Shock Resistance, points 24 to 32
21

Alloy Composition

Aluminum (Al), % 0
1.8 to 2.4
Carbon (C), % 0 to 0.14
0.15 to 0.25
Chromium (Cr), % 26 to 30
24 to 26
Cobalt (Co), % 58.9 to 69
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 0 to 0.75
8.0 to 11
Manganese (Mn), % 0 to 1.0
0 to 0.15
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
59.2 to 65.9
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0.1 to 0.2
Yttrium (Y), % 0
0.050 to 0.12
Zinc (Zn), % 0
0.010 to 0.1