R30816 Cobalt vs. Nickel 201
R30816 cobalt belongs to the cobalt alloys classification, while nickel 201 belongs to the nickel alloys. They have a modest 21% 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 (8, in this case) are not shown.
For each property being compared, the top bar is R30816 cobalt and the bottom bar is nickel 201.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 180 |
| Elongation at Break, % | 23 | |
| 4.5 to 45 |
| Fatigue Strength, MPa | 250 | |
| 42 to 210 |
| Poisson's Ratio | 0.3 | |
| 0.31 |
| Shear Modulus, GPa | 81 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 390 to 660 |
| Tensile Strength: Yield (Proof), MPa | 460 | |
| 80 to 510 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 290 |
| Melting Completion (Liquidus), °C | 1540 | |
| 1450 |
| Melting Onset (Solidus), °C | 1460 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 440 |
| Thermal Conductivity, W/m-K | 13 | |
| 78 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.1 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 20 | |
| 11 |
| Embodied Energy, MJ/kg | 320 | |
| 150 |
| Embodied Water, L/kg | 440 | |
| 230 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 25 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
| 17 to 720 |
| Stiffness to Weight: Axial, points | 13 | |
| 11 |
| Stiffness to Weight: Bending, points | 22 | |
| 21 |
| Strength to Weight: Axial, points | 31 | |
| 12 to 20 |
| Strength to Weight: Bending, points | 25 | |
| 13 to 19 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 20 |
| Thermal Shock Resistance, points | 28 | |
| 11 to 19 |
Alloy Composition
| Carbon (C), % | 0.32 to 0.42 | |
| 0 to 0.020 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 40 to 49.8 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 0 to 5.0 | |
| 0 to 0.4 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 |
| Nickel (Ni), % | 19 to 21 | |
| 99 to 100 |
| Niobium (Nb), % | 3.5 to 4.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.010 |
| Tantalum (Ta), % | 3.5 to 4.5 | |
| 0 |
| Tungsten (W), % | 3.5 to 4.5 | |
| 0 |