R30006 Cobalt vs. EN 1.1133 Steel
R30006 cobalt belongs to the cobalt alloys classification, while EN 1.1133 steel belongs to the iron alloys. There are 27 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 R30006 cobalt and the bottom bar is EN 1.1133 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 190 |
| Elongation at Break, % | 1.0 | |
| 19 to 24 |
| Fatigue Strength, MPa | 260 | |
| 230 to 310 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 85 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 900 | |
| 580 to 620 |
| Tensile Strength: Yield (Proof), MPa | 540 | |
| 320 to 460 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1460 |
| Melting Onset (Solidus), °C | 1290 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 49 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.6 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.7 | |
| 8.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 7.8 | |
| 1.5 |
| Embodied Energy, MJ/kg | 110 | |
| 19 |
| Embodied Water, L/kg | 500 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.8 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 670 | |
| 270 to 550 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 29 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 24 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 3.9 | |
| 13 |
| Thermal Shock Resistance, points | 26 | |
| 18 to 19 |
Alloy Composition
| Carbon (C), % | 0.9 to 1.4 | |
| 0.17 to 0.23 |
| Chromium (Cr), % | 27 to 32 | |
| 0 to 0.4 |
| Cobalt (Co), % | 48.6 to 68.1 | |
| 0 |
| Iron (Fe), % | 0 to 3.0 | |
| 96.9 to 98.8 |
| Manganese (Mn), % | 0 | |
| 1.0 to 1.5 |
| Molybdenum (Mo), % | 0 to 1.0 | |
| 0 to 0.1 |
| Nickel (Ni), % | 0 to 3.0 | |
| 0 to 0.4 |
| Phosphorus (P), % | 0 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 to 0.4 |
| Sulfur (S), % | 0 | |
| 0 to 0.035 |
| Tungsten (W), % | 4.0 to 6.0 | |
| 0 |