R30605 Cobalt vs. Type 4 Magnetic Alloy
R30605 cobalt belongs to the cobalt alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. There are 23 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 R30605 cobalt and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 34 | |
| 2.0 to 40 |
| Fatigue Strength, MPa | 260 to 590 | |
| 220 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 81 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 to 1900 | |
| 620 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1600 | |
| 270 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1420 |
| Melting Onset (Solidus), °C | 1330 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 440 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 3.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 9.8 | |
| 10 |
| Embodied Energy, MJ/kg | 140 | |
| 140 |
| Embodied Water, L/kg | 450 | |
| 210 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 12 |
| Stiffness to Weight: Bending, points | 21 | |
| 22 |
| Strength to Weight: Axial, points | 33 to 55 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 25 to 36 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 31 to 52 | |
| 21 to 37 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 21 | |
| 0 to 0.3 |
| Cobalt (Co), % | 46.4 to 57 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 0 to 3.0 | |
| 9.5 to 17.5 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 9.0 to 11 | |
| 79 to 82 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Tungsten (W), % | 14 to 16 | |
| 0 |