Monel 400 vs. R30035 Cobalt
Monel 400 belongs to the nickel alloys classification, while R30035 cobalt belongs to the cobalt alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 Monel 400 and the bottom bar is R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 160 | |
| 220 to 230 |
| Elongation at Break, % | 20 to 40 | |
| 9.0 to 46 |
| Fatigue Strength, MPa | 230 to 290 | |
| 170 to 740 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 62 | |
| 84 to 89 |
| Tensile Strength: Ultimate (UTS), MPa | 540 to 780 | |
| 900 to 1900 |
| Tensile Strength: Yield (Proof), MPa | 210 to 590 | |
| 300 to 1650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 320 |
| Melting Completion (Liquidus), °C | 1350 | |
| 1440 |
| Melting Onset (Solidus), °C | 1300 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 430 | |
| 440 |
| Thermal Conductivity, W/m-K | 23 | |
| 11 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.3 | |
| 1.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.4 | |
| 1.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 100 |
| Density, g/cm3 | 8.9 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 7.9 | |
| 10 |
| Embodied Energy, MJ/kg | 110 | |
| 140 |
| Embodied Water, L/kg | 250 | |
| 410 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 180 | |
| 160 to 320 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 1080 | |
| 210 to 5920 |
| Stiffness to Weight: Axial, points | 10 | |
| 14 to 15 |
| Stiffness to Weight: Bending, points | 21 | |
| 23 to 24 |
| Strength to Weight: Axial, points | 17 to 25 | |
| 29 to 61 |
| Strength to Weight: Bending, points | 17 to 21 | |
| 24 to 39 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 3.0 |
| Thermal Shock Resistance, points | 17 to 25 | |
| 23 to 46 |
Alloy Composition
| Boron (B), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0 to 0.3 | |
| 0 to 0.025 |
| Chromium (Cr), % | 0 | |
| 19 to 21 |
| Cobalt (Co), % | 0 | |
| 29.1 to 39 |
| Copper (Cu), % | 28 to 34 | |
| 0 |
| Iron (Fe), % | 0 to 2.5 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 0.15 |
| Molybdenum (Mo), % | 0 | |
| 9.0 to 10.5 |
| Nickel (Ni), % | 63 to 72 | |
| 33 to 37 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.15 |
| Sulfur (S), % | 0 to 0.024 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0 to 1.0 |