R30008 Cobalt vs. R30001 Cobalt
Both R30008 cobalt and R30001 cobalt are cobalt alloys. They have 65% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is R30008 cobalt and the bottom bar is R30001 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 220 |
| Elongation at Break, % | 1.1 to 73 | |
| 1.0 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 83 | |
| 86 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 620 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 310 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1530 |
| Melting Onset (Solidus), °C | 1330 | |
| 1260 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 430 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 9.0 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 8.9 |
| Embodied Energy, MJ/kg | 110 | |
| 130 |
| Embodied Water, L/kg | 400 | |
| 460 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 22 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 19 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 18 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 19 |
Alloy Composition
| Boron (B), % | 0 to 0.0010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 2.0 to 3.0 |
| Chromium (Cr), % | 18.5 to 21.5 | |
| 28 to 32 |
| Cobalt (Co), % | 39 to 42 | |
| 43 to 59 |
| Iron (Fe), % | 7.6 to 20 | |
| 0 to 3.0 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 6.5 to 7.5 | |
| 0 to 1.0 |
| Nickel (Ni), % | 15 to 18 | |
| 0 to 3.0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 to 2.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Tungsten (W), % | 0 | |
| 11 to 13 |