R30605 Cobalt vs. R30035 Cobalt
Both R30605 cobalt and R30035 cobalt are cobalt alloys. They have 65% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is R30605 cobalt and the bottom bar is R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 220 to 230 |
| Elongation at Break, % | 34 | |
| 9.0 to 46 |
| Fatigue Strength, MPa | 260 to 590 | |
| 170 to 740 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 84 to 89 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 to 1900 | |
| 900 to 1900 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1600 | |
| 300 to 1650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 320 |
| Melting Completion (Liquidus), °C | 1410 | |
| 1440 |
| Melting Onset (Solidus), °C | 1330 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 440 |
| Thermal Conductivity, W/m-K | 9.6 | |
| 11 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 1.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 1.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 9.8 | |
| 10 |
| Embodied Energy, MJ/kg | 140 | |
| 140 |
| Embodied Water, L/kg | 450 | |
| 410 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 14 to 15 |
| Stiffness to Weight: Bending, points | 21 | |
| 23 to 24 |
| Strength to Weight: Axial, points | 33 to 55 | |
| 29 to 61 |
| Strength to Weight: Bending, points | 25 to 36 | |
| 24 to 39 |
| Thermal Diffusivity, mm2/s | 2.5 | |
| 3.0 |
| Thermal Shock Resistance, points | 31 to 52 | |
| 23 to 46 |
Alloy Composition
| Boron (B), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.025 |
| Chromium (Cr), % | 19 to 21 | |
| 19 to 21 |
| Cobalt (Co), % | 46.4 to 57 | |
| 29.1 to 39 |
| Iron (Fe), % | 0 to 3.0 | |
| 0 to 1.0 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 0.15 |
| Molybdenum (Mo), % | 0 | |
| 9.0 to 10.5 |
| Nickel (Ni), % | 9.0 to 11 | |
| 33 to 37 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0 to 1.0 |
| Tungsten (W), % | 14 to 16 | |
| 0 |