R30021 Cobalt vs. Type 1 Magnetic Alloy
R30021 cobalt belongs to the cobalt alloys classification, while Type 1 magnetic alloy belongs to the iron alloys. There are 24 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 R30021 cobalt and the bottom bar is Type 1 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 190 |
| Elongation at Break, % | 9.0 | |
| 4.0 to 38 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 86 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 700 | |
| 500 to 830 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 220 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 270 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1420 |
| Melting Onset (Solidus), °C | 1190 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 460 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.9 | |
| 3.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 3.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 5.6 |
| Embodied Energy, MJ/kg | 110 | |
| 77 |
| Embodied Water, L/kg | 520 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 57 | |
| 33 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 570 | |
| 130 to 1690 |
| Stiffness to Weight: Axial, points | 15 | |
| 12 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 23 | |
| 17 to 28 |
| Strength to Weight: Bending, points | 21 | |
| 17 to 24 |
| Thermal Shock Resistance, points | 21 | |
| 16 to 26 |
Alloy Composition
| Carbon (C), % | 0.2 to 0.35 | |
| 0 to 0.050 |
| Chromium (Cr), % | 26 to 29 | |
| 0 to 0.3 |
| Cobalt (Co), % | 61.7 to 67.3 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 0 to 3.0 | |
| 50.7 to 56.5 |
| Manganese (Mn), % | 0 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 4.5 to 6.0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 2.0 to 3.0 | |
| 43.5 to 46.5 |
| Phosphorus (P), % | 0 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 1.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |