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R31537 Cobalt vs. N09777 Nickel

R31537 cobalt belongs to the cobalt alloys classification, while N09777 nickel belongs to the nickel alloys. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R31537 cobalt and the bottom bar is N09777 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Elongation at Break, % 14 to 23
39
Fatigue Strength, MPa 310 to 480
190
Poisson's Ratio 0.29
0.29
Reduction in Area, % 13 to 23
57
Shear Modulus, GPa 87
77
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
580
Tensile Strength: Yield (Proof), MPa 590 to 940
240

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1290
1390
Specific Heat Capacity, J/kg-K 450
460
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 8.1
7.4
Embodied Energy, MJ/kg 110
100
Embodied Water, L/kg 530
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
180
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33 to 44
20
Strength to Weight: Bending, points 26 to 32
19
Thermal Shock Resistance, points 24 to 32
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.14
0 to 0.030
Chromium (Cr), % 26 to 30
14 to 19
Cobalt (Co), % 58.9 to 69
0
Iron (Fe), % 0 to 0.75
28.5 to 47.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
2.5 to 5.5
Nickel (Ni), % 0 to 1.0
34 to 42
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
2.0 to 3.0