EN 1.1191 Steel vs. R30016 Cobalt
EN 1.1191 steel belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 28 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is EN 1.1191 steel and the bottom bar is R30016 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 16 to 17 | |
| 8.4 |
| Fatigue Strength, MPa | 210 to 290 | |
| 290 |
| Impact Strength: V-Notched Charpy, J | 16 to 29 | |
| 8.0 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 700 | |
| 1010 |
| Tensile Strength: Yield (Proof), MPa | 310 to 440 | |
| 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1360 |
| Melting Onset (Solidus), °C | 1420 | |
| 1270 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Conductivity, W/m-K | 48 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 1.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 2.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 7.7 |
| Embodied Energy, MJ/kg | 19 | |
| 110 |
| Embodied Water, L/kg | 47 | |
| 500 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 100 | |
| 72 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 260 to 510 | |
| 770 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 22 to 25 | |
| 33 |
| Strength to Weight: Bending, points | 21 to 22 | |
| 26 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.9 |
| Thermal Shock Resistance, points | 20 to 22 | |
| 24 |
Alloy Composition
| Carbon (C), % | 0.42 to 0.5 | |
| 0.9 to 1.4 |
| Chromium (Cr), % | 0 to 0.4 | |
| 28 to 32 |
| Cobalt (Co), % | 0 | |
| 49.6 to 66.9 |
| Iron (Fe), % | 97.3 to 99.08 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0.5 to 0.8 | |
| 0.5 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.1 | |
| 0 to 1.5 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0 to 3.0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0 to 0.4 | |
| 0.2 to 2.0 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 |
| Tungsten (W), % | 0 | |
| 3.5 to 5.5 |