R31539 Cobalt vs. EN 1.4020 Stainless Steel
R31539 cobalt belongs to the cobalt alloys classification, while EN 1.4020 stainless steel belongs to the iron alloys. There are 23 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 R31539 cobalt and the bottom bar is EN 1.4020 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 200 |
| Elongation at Break, % | 13 to 22 | |
| 13 to 34 |
| Fatigue Strength, MPa | 310 to 480 | |
| 340 to 540 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 86 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1340 | |
| 770 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 590 to 940 | |
| 430 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Melting Completion (Liquidus), °C | 1360 | |
| 1390 |
| Melting Onset (Solidus), °C | 1290 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 2.5 |
| Embodied Energy, MJ/kg | 110 | |
| 37 |
| Embodied Water, L/kg | 530 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 190 | |
| 140 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 780 to 2000 | |
| 460 to 2290 |
| Stiffness to Weight: Axial, points | 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 33 to 44 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 27 to 32 | |
| 25 to 32 |
| Thermal Shock Resistance, points | 24 to 32 | |
| 16 to 23 |
Alloy Composition
| Aluminum (Al), % | 0.3 to 1.0 | |
| 0 |
| Carbon (C), % | 0 to 0.14 | |
| 0 to 0.15 |
| Chromium (Cr), % | 26 to 30 | |
| 16.5 to 19 |
| Cobalt (Co), % | 57.7 to 68.7 | |
| 0 |
| Iron (Fe), % | 0 to 0.75 | |
| 62.8 to 71.8 |
| Lanthanum (La), % | 0.030 to 0.2 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 11 to 14 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0.5 to 2.5 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0.2 to 0.45 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |