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R31537 Cobalt vs. N06920 Nickel

R31537 cobalt belongs to the cobalt alloys classification, while N06920 nickel belongs to the nickel alloys. They have a modest 32% 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 N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 14 to 23
39
Fatigue Strength, MPa 310 to 480
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 87
82
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
730
Tensile Strength: Yield (Proof), MPa 590 to 940
270

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1360
1500
Melting Onset (Solidus), °C 1290
1440
Specific Heat Capacity, J/kg-K 450
440
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
8.6
Embodied Carbon, kg CO2/kg material 8.1
9.4
Embodied Energy, MJ/kg 110
130
Embodied Water, L/kg 530
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
230
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
24
Strength to Weight: Bending, points 26 to 32
21
Thermal Diffusivity, mm2/s 3.4
2.8
Thermal Shock Resistance, points 24 to 32
19

Alloy Composition

Carbon (C), % 0 to 0.14
0 to 0.030
Chromium (Cr), % 26 to 30
20.5 to 23
Cobalt (Co), % 58.9 to 69
0 to 5.0
Iron (Fe), % 0 to 0.75
17 to 20
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
8.0 to 10
Nickel (Ni), % 0 to 1.0
36.9 to 53.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0