R30605 Cobalt vs. EN 1.3961 Alloy
R30605 cobalt belongs to the cobalt alloys classification, while EN 1.3961 alloy belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is R30605 cobalt and the bottom bar is EN 1.3961 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 34 | |
| 31 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 81 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 to 1900 | |
| 450 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1600 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 270 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1430 |
| Melting Onset (Solidus), °C | 1330 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 460 |
| Thermal Expansion, µm/m-K | 12 | |
| 1.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 9.8 | |
| 4.8 |
| Embodied Energy, MJ/kg | 140 | |
| 66 |
| Embodied Water, L/kg | 450 | |
| 110 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 23 |
| Strength to Weight: Axial, points | 33 to 55 | |
| 15 |
| Strength to Weight: Bending, points | 25 to 36 | |
| 16 |
| Thermal Shock Resistance, points | 31 to 52 | |
| 130 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 0 to 0.25 |
| Cobalt (Co), % | 46.4 to 57 | |
| 0 |
| Iron (Fe), % | 0 to 3.0 | |
| 60.7 to 65 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 9.0 to 11 | |
| 35 to 37 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Tungsten (W), % | 14 to 16 | |
| 0 |