Annealed R31538 Cobalt vs. Annealed R60901 Alloy
Annealed R31538 cobalt belongs to the cobalt alloys classification, while annealed R60901 alloy belongs to the otherwise unclassified metals. There are 21 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 annealed R31538 cobalt and the bottom bar is annealed R60901 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 98 |
| Elongation at Break, % | 23 | |
| 22 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 86 | |
| 37 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 500 |
| Tensile Strength: Yield (Proof), MPa | 580 | |
| 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1870 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 270 |
| Thermal Conductivity, W/m-K | 13 | |
| 17 |
| Thermal Expansion, µm/m-K | 13 | |
| 6.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 6.6 |
| Embodied Water, L/kg | 530 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 | |
| 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 750 | |
| 640 |
| Stiffness to Weight: Axial, points | 15 | |
| 8.3 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 34 | |
| 21 |
| Strength to Weight: Bending, points | 27 | |
| 21 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 9.7 |
| Thermal Shock Resistance, points | 25 | |
| 58 |
Alloy Composition
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| Carbon (C), % | 0.15 to 0.35 | |
| 0 |
| Chromium (Cr), % | 26 to 30 | |
| 0 |
| Cobalt (Co), % | 58.7 to 68.9 | |
| 0 |
| Iron (Fe), % | 0 to 0.75 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 |
| Niobium (Nb), % | 0 | |
| 2.4 to 2.8 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 96.8 to 97.5 |
| Residuals, % | 0 | |
| 0 to 0.29 |