EN 1.4612 Stainless Steel vs. R31537 Cobalt
EN 1.4612 stainless steel belongs to the iron alloys classification, while R31537 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is EN 1.4612 stainless steel and the bottom bar is R31537 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 11 | |
| 14 to 23 |
| Fatigue Strength, MPa | 860 to 950 | |
| 310 to 480 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 87 |
| Tensile Strength: Ultimate (UTS), MPa | 1690 to 1850 | |
| 1000 to 1340 |
| Tensile Strength: Yield (Proof), MPa | 1570 to 1730 | |
| 590 to 940 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 320 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1360 |
| Melting Onset (Solidus), °C | 1400 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 450 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 8.1 |
| Embodied Energy, MJ/kg | 50 | |
| 110 |
| Embodied Water, L/kg | 140 | |
| 530 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 210 | |
| 140 to 200 |
| Stiffness to Weight: Axial, points | 14 | |
| 15 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 60 to 65 | |
| 33 to 44 |
| Strength to Weight: Bending, points | 40 to 43 | |
| 26 to 32 |
| Thermal Shock Resistance, points | 58 to 63 | |
| 24 to 32 |
Alloy Composition
| Aluminum (Al), % | 1.4 to 1.8 | |
| 0 |
| Carbon (C), % | 0 to 0.015 | |
| 0 to 0.14 |
| Chromium (Cr), % | 11 to 12.5 | |
| 26 to 30 |
| Cobalt (Co), % | 0 | |
| 58.9 to 69 |
| Iron (Fe), % | 71.5 to 75.5 | |
| 0 to 0.75 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 1.8 to 2.3 | |
| 5.0 to 7.0 |
| Nickel (Ni), % | 10.2 to 11.3 | |
| 0 to 1.0 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 |
| Titanium (Ti), % | 0.2 to 0.5 | |
| 0 |