R30155 Cobalt vs. SAE-AISI M62 Steel
Both R30155 cobalt and SAE-AISI M62 steel are iron alloys. They have 40% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is R30155 cobalt and the bottom bar is SAE-AISI M62 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 200 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 850 | |
| 830 to 2440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 260 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1650 |
| Melting Onset (Solidus), °C | 1420 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 430 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 80 | |
| 30 |
| Density, g/cm3 | 8.5 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 9.7 | |
| 10 |
| Embodied Energy, MJ/kg | 150 | |
| 150 |
| Embodied Water, L/kg | 300 | |
| 110 |
Common Calculations
| PREN (Pitting Resistance) | 37 | |
| 49 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 28 | |
| 27 to 80 |
| Strength to Weight: Bending, points | 24 | |
| 23 to 47 |
| Thermal Shock Resistance, points | 21 | |
| 24 to 71 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.16 | |
| 1.3 to 1.4 |
| Chromium (Cr), % | 20 to 22.5 | |
| 3.5 to 4.0 |
| Cobalt (Co), % | 18.5 to 21 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 24.3 to 36.2 | |
| 73.6 to 77.4 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0.15 to 0.4 |
| Molybdenum (Mo), % | 2.5 to 3.5 | |
| 10 to 11 |
| Nickel (Ni), % | 19 to 21 | |
| 0 to 0.3 |
| Niobium (Nb), % | 0.75 to 1.3 | |
| 0 |
| Nitrogen (N), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 1.0 | |
| 0.15 to 0.4 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0.75 to 1.3 | |
| 0 |
| Tungsten (W), % | 2.0 to 3.0 | |
| 5.8 to 6.5 |
| Vanadium (V), % | 0 | |
| 1.8 to 2.1 |