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R31539 Cobalt vs. N07752 Nickel

R31539 cobalt belongs to the cobalt alloys classification, while N07752 nickel belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is N07752 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 13 to 22
22
Fatigue Strength, MPa 310 to 480
450
Poisson's Ratio 0.29
0.29
Reduction in Area, % 13 to 23
23
Shear Modulus, GPa 86
73
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
1120
Tensile Strength: Yield (Proof), MPa 590 to 940
740

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Melting Completion (Liquidus), °C 1360
1380
Melting Onset (Solidus), °C 1290
1330
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.5

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 8.2
10
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 530
260

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 190
220
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 2000
1450
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
37
Strength to Weight: Bending, points 27 to 32
29
Thermal Diffusivity, mm2/s 3.5
3.2
Thermal Shock Resistance, points 24 to 32
34

Alloy Composition

Aluminum (Al), % 0.3 to 1.0
0.4 to 1.0
Boron (B), % 0
0 to 0.0070
Carbon (C), % 0 to 0.14
0.020 to 0.060
Chromium (Cr), % 26 to 30
14.5 to 17
Cobalt (Co), % 57.7 to 68.7
0 to 0.050
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
5.0 to 9.0
Lanthanum (La), % 0.030 to 0.2
0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
70 to 77.1
Niobium (Nb), % 0
0.7 to 1.2
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.0080
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0
0 to 0.0030
Titanium (Ti), % 0
2.3 to 2.8
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.050