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Nickel 22 vs. R31539 Cobalt

Nickel 22 belongs to the nickel alloys classification, while R31539 cobalt belongs to the cobalt alloys. They have a modest 29% 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 nickel 22 and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 49
13 to 22
Fatigue Strength, MPa 330
310 to 480
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 84
86
Tensile Strength: Ultimate (UTS), MPa 790
1000 to 1340
Tensile Strength: Yield (Proof), MPa 360
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1390
1360
Melting Onset (Solidus), °C 1360
1290
Specific Heat Capacity, J/kg-K 430
450
Thermal Conductivity, W/m-K 10
13
Thermal Expansion, µm/m-K 11
13

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.4
Embodied Carbon, kg CO2/kg material 12
8.2
Embodied Energy, MJ/kg 170
110
Embodied Water, L/kg 300
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 300
780 to 2000
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 25
33 to 44
Strength to Weight: Bending, points 21
27 to 32
Thermal Diffusivity, mm2/s 2.7
3.5
Thermal Shock Resistance, points 24
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0 to 0.015
0 to 0.14
Chromium (Cr), % 20 to 22.5
26 to 30
Cobalt (Co), % 0 to 2.5
57.7 to 68.7
Iron (Fe), % 2.0 to 6.0
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 0.015
0 to 1.0
Molybdenum (Mo), % 12.5 to 14.5
5.0 to 7.0
Nickel (Ni), % 50.8 to 63
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.080
0 to 1.0
Sulfur (S), % 0 to 0.020
0
Tungsten (W), % 2.5 to 3.5
0
Vanadium (V), % 0 to 0.35
0