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Grade N12MV Nickel vs. R31539 Cobalt

Grade N12MV nickel belongs to the nickel alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade N12MV nickel and the bottom bar is R31539 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 6.8
13 to 22
Fatigue Strength, MPa 130
310 to 480
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 84
86
Tensile Strength: Ultimate (UTS), MPa 600
1000 to 1340
Tensile Strength: Yield (Proof), MPa 310
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1620
1360
Melting Onset (Solidus), °C 1570
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Density, g/cm3 9.2
8.4
Embodied Carbon, kg CO2/kg material 16
8.2
Embodied Energy, MJ/kg 200
110
Embodied Water, L/kg 260
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
140 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 220
780 to 2000
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 18
33 to 44
Strength to Weight: Bending, points 17
27 to 32
Thermal Shock Resistance, points 19
24 to 32

Alloy Composition

Aluminum (Al), % 0
0.3 to 1.0
Carbon (C), % 0 to 0.12
0 to 0.14
Chromium (Cr), % 0 to 1.0
26 to 30
Cobalt (Co), % 0
57.7 to 68.7
Iron (Fe), % 4.0 to 6.0
0 to 0.75
Lanthanum (La), % 0
0.030 to 0.2
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 26 to 30
5.0 to 7.0
Nickel (Ni), % 60.2 to 69.8
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.2 to 0.6
0