R30021 Cobalt vs. Nickel 200
R30021 cobalt belongs to the cobalt alloys classification, while nickel 200 belongs to the nickel alloys. There are 27 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 R30021 cobalt and the bottom bar is nickel 200.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 180 |
| Elongation at Break, % | 9.0 | |
| 23 to 44 |
| Fatigue Strength, MPa | 250 | |
| 120 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 86 | |
| 70 |
| Tensile Strength: Ultimate (UTS), MPa | 700 | |
| 420 to 540 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 120 to 370 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 290 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1460 |
| Melting Onset (Solidus), °C | 1190 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 450 |
| Thermal Conductivity, W/m-K | 15 | |
| 69 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.9 | |
| 18 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 18 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 11 |
| Embodied Energy, MJ/kg | 110 | |
| 150 |
| Embodied Water, L/kg | 520 | |
| 230 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 | |
| 110 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 | |
| 42 to 370 |
| Stiffness to Weight: Axial, points | 15 | |
| 11 |
| Stiffness to Weight: Bending, points | 24 | |
| 21 |
| Strength to Weight: Axial, points | 23 | |
| 13 to 17 |
| Strength to Weight: Bending, points | 21 | |
| 14 to 17 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 17 |
| Thermal Shock Resistance, points | 21 | |
| 13 to 16 |
Alloy Composition
| Carbon (C), % | 0.2 to 0.35 | |
| 0 to 0.15 |
| Chromium (Cr), % | 26 to 29 | |
| 0 |
| Cobalt (Co), % | 61.7 to 67.3 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 0.4 |
| Manganese (Mn), % | 0 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 4.5 to 6.0 | |
| 0 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 99 to 100 |
| Silicon (Si), % | 0 to 1.5 | |
| 0 to 0.35 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |