R30008 Cobalt vs. Monel R-405
R30008 cobalt belongs to the cobalt alloys classification, while Monel R-405 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 R30008 cobalt and the bottom bar is Monel R-405.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 160 |
| Elongation at Break, % | 1.1 to 73 | |
| 9.1 to 39 |
| Fatigue Strength, MPa | 320 to 530 | |
| 210 to 250 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 83 | |
| 62 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 540 to 630 |
| Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
| 190 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 270 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1350 |
| Melting Onset (Solidus), °C | 1330 | |
| 1300 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 430 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 95 | |
| 50 |
| Density, g/cm3 | 8.4 | |
| 8.9 |
| Embodied Carbon, kg CO2/kg material | 8.1 | |
| 7.9 |
| Embodied Energy, MJ/kg | 110 | |
| 110 |
| Embodied Water, L/kg | 400 | |
| 250 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
| 120 to 370 |
| Stiffness to Weight: Axial, points | 14 | |
| 10 |
| Stiffness to Weight: Bending, points | 24 | |
| 21 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 17 to 20 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 17 to 18 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 17 to 20 |
Alloy Composition
| Boron (B), % | 0 to 0.0010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.3 |
| Chromium (Cr), % | 18.5 to 21.5 | |
| 0 |
| Cobalt (Co), % | 39 to 42 | |
| 0 |
| Copper (Cu), % | 0 | |
| 28 to 34 |
| Iron (Fe), % | 7.6 to 20 | |
| 0 to 2.5 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 6.5 to 7.5 | |
| 0 |
| Nickel (Ni), % | 15 to 18 | |
| 63 to 72 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0.025 to 0.060 |