R30816 Cobalt vs. EN 1.0213 Steel
R30816 cobalt belongs to the cobalt alloys classification, while EN 1.0213 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is R30816 cobalt and the bottom bar is EN 1.0213 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 280 | |
| 92 to 120 |
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 23 | |
| 12 to 25 |
| Fatigue Strength, MPa | 250 | |
| 160 to 240 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Reduction in Area, % | 22 | |
| 72 to 80 |
| Shear Modulus, GPa | 81 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1020 | |
| 320 to 430 |
| Tensile Strength: Yield (Proof), MPa | 460 | |
| 220 to 330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 250 |
| Melting Completion (Liquidus), °C | 1540 | |
| 1470 |
| Melting Onset (Solidus), °C | 1460 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 420 | |
| 470 |
| Thermal Conductivity, W/m-K | 13 | |
| 53 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.1 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 20 | |
| 1.4 |
| Embodied Energy, MJ/kg | 320 | |
| 18 |
| Embodied Water, L/kg | 440 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 33 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
| 120 to 300 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 24 |
| Strength to Weight: Axial, points | 31 | |
| 11 to 15 |
| Strength to Weight: Bending, points | 25 | |
| 13 to 16 |
| Thermal Diffusivity, mm2/s | 3.3 | |
| 14 |
| Thermal Shock Resistance, points | 28 | |
| 10 to 14 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.020 to 0.060 |
| Carbon (C), % | 0.32 to 0.42 | |
| 0.060 to 0.1 |
| Chromium (Cr), % | 19 to 21 | |
| 0 |
| Cobalt (Co), % | 40 to 49.8 | |
| 0 |
| Iron (Fe), % | 0 to 5.0 | |
| 99.245 to 99.67 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0.25 to 0.45 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 |
| Nickel (Ni), % | 19 to 21 | |
| 0 |
| Niobium (Nb), % | 3.5 to 4.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.025 |
| Tantalum (Ta), % | 3.5 to 4.5 | |
| 0 |
| Tungsten (W), % | 3.5 to 4.5 | |
| 0 |