EN 1.5662 Steel vs. R30021 Cobalt
EN 1.5662 steel belongs to the iron alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 25 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 EN 1.5662 steel and the bottom bar is R30021 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 20 | |
| 9.0 |
| Fatigue Strength, MPa | 380 to 450 | |
| 250 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 86 |
| Tensile Strength: Ultimate (UTS), MPa | 740 to 750 | |
| 700 |
| Tensile Strength: Yield (Proof), MPa | 550 to 660 | |
| 500 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 330 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1350 |
| Melting Onset (Solidus), °C | 1410 | |
| 1190 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.7 | |
| 1.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.8 | |
| 2.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.0 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 8.0 |
| Embodied Energy, MJ/kg | 31 | |
| 110 |
| Embodied Water, L/kg | 63 | |
| 520 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 150 | |
| 57 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 810 to 1150 | |
| 570 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 23 |
| Strength to Weight: Bending, points | 23 | |
| 21 |
| Thermal Shock Resistance, points | 22 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0.2 to 0.35 |
| Chromium (Cr), % | 0 | |
| 26 to 29 |
| Cobalt (Co), % | 0 | |
| 61.7 to 67.3 |
| Iron (Fe), % | 88.6 to 91.2 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0.3 to 0.8 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 4.5 to 6.0 |
| Nickel (Ni), % | 8.5 to 10 | |
| 2.0 to 3.0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 |
| Silicon (Si), % | 0 to 0.35 | |
| 0 to 1.5 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 |
| Vanadium (V), % | 0 to 0.050 | |
| 0 |