R30012 Cobalt vs. EN 1.0434 Steel
R30012 cobalt belongs to the cobalt alloys classification, while EN 1.0434 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is R30012 cobalt and the bottom bar is EN 1.0434 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 190 |
| Elongation at Break, % | 1.0 | |
| 12 to 28 |
| Fatigue Strength, MPa | 320 | |
| 190 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 86 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 830 | |
| 390 to 540 |
| Tensile Strength: Yield (Proof), MPa | 650 | |
| 250 to 450 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1280 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 52 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 8.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 8.3 | |
| 1.4 |
| Embodied Energy, MJ/kg | 120 | |
| 18 |
| Embodied Water, L/kg | 480 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.7 | |
| 39 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 960 | |
| 170 to 540 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 14 to 19 |
| Strength to Weight: Bending, points | 22 | |
| 15 to 19 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 14 |
| Thermal Shock Resistance, points | 23 | |
| 12 to 17 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.020 to 0.060 |
| Carbon (C), % | 1.4 to 2.0 | |
| 0.15 to 0.19 |
| Chromium (Cr), % | 27 to 32 | |
| 0 |
| Cobalt (Co), % | 47.5 to 64.1 | |
| 0 |
| Iron (Fe), % | 0 to 3.0 | |
| 98.8 to 99.18 |
| Manganese (Mn), % | 0 | |
| 0.65 to 0.85 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 0 to 3.0 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 | |
| 0 to 0.025 |
| Tungsten (W), % | 7.5 to 9.5 | |
| 0 |