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EN 2.4654 Nickel vs. R31537 Cobalt

EN 2.4654 nickel belongs to the nickel alloys classification, while R31537 cobalt belongs to the cobalt alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 2.4654 nickel and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 17
14 to 23
Fatigue Strength, MPa 460
310 to 480
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
87
Tensile Strength: Ultimate (UTS), MPa 1250
1000 to 1340
Tensile Strength: Yield (Proof), MPa 850
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1390
1360
Melting Onset (Solidus), °C 1330
1290
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 10
8.1
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 340
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 1810
780 to 1990
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 42
33 to 44
Strength to Weight: Bending, points 31
26 to 32
Thermal Diffusivity, mm2/s 3.3
3.4
Thermal Shock Resistance, points 37
24 to 32

Alloy Composition

Aluminum (Al), % 1.2 to 1.6
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.020 to 0.1
0 to 0.14
Chromium (Cr), % 18 to 21
26 to 30
Cobalt (Co), % 12 to 15
58.9 to 69
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 2.0
0 to 0.75
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 3.5 to 5.0
5.0 to 7.0
Nickel (Ni), % 50.6 to 62.5
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.15
0 to 1.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 2.8 to 3.3
0
Zirconium (Zr), % 0.020 to 0.080
0