R30003 Cobalt vs. Type 2 Magnetic Alloy
R30003 cobalt belongs to the cobalt alloys classification, while Type 2 magnetic alloy belongs to the iron alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 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 R30003 cobalt and the bottom bar is Type 2 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 10 to 73 | |
| 2.0 to 38 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 83 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 970 to 1720 | |
| 510 to 910 |
| Tensile Strength: Yield (Proof), MPa | 510 to 1090 | |
| 260 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 270 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1420 |
| Melting Onset (Solidus), °C | 1440 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 460 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 3.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 4.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 33 |
| Density, g/cm3 | 8.4 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 8.0 | |
| 5.9 |
| Embodied Energy, MJ/kg | 110 | |
| 81 |
| Embodied Water, L/kg | 400 | |
| 140 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 600 to 2790 | |
| 170 to 2010 |
| Stiffness to Weight: Axial, points | 14 | |
| 12 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 32 to 57 | |
| 17 to 30 |
| Strength to Weight: Bending, points | 26 to 38 | |
| 17 to 25 |
| Thermal Shock Resistance, points | 26 to 45 | |
| 16 to 29 |
Alloy Composition
| Boron (B), % | 0 to 0.1 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 0 to 0.3 |
| Cobalt (Co), % | 39 to 41 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 10 to 20.5 | |
| 48.2 to 53 |
| Manganese (Mn), % | 1.5 to 2.5 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 6.0 to 8.0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 14 to 16 | |
| 47 to 49 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |