Grade CX2M Nickel vs. G-CoCr28 Cobalt
Grade CX2M nickel belongs to the nickel alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much.
For each property being compared, the top bar is grade CX2M nickel and the bottom bar is G-CoCr28 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 210 |
| Elongation at Break, % | 45 | |
| 6.7 |
| Fatigue Strength, MPa | 260 | |
| 130 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 84 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 560 |
| Tensile Strength: Yield (Proof), MPa | 310 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 330 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 990 | |
| 1200 |
| Melting Completion (Liquidus), °C | 1500 | |
| 1330 |
| Melting Onset (Solidus), °C | 1450 | |
| 1270 |
| Specific Heat Capacity, J/kg-K | 430 | |
| 470 |
| Thermal Conductivity, W/m-K | 10 | |
| 8.5 |
| Thermal Expansion, µm/m-K | 12 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 65 | |
| 100 |
| Density, g/cm3 | 8.7 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 12 | |
| 6.2 |
| Embodied Energy, MJ/kg | 160 | |
| 84 |
| Embodied Water, L/kg | 310 | |
| 440 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 210 | |
| 31 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 220 | |
| 160 |
| Stiffness to Weight: Axial, points | 14 | |
| 15 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 18 | |
| 19 |
| Strength to Weight: Bending, points | 17 | |
| 19 |
| Thermal Diffusivity, mm2/s | 2.7 | |
| 2.2 |
| Thermal Shock Resistance, points | 15 | |
| 14 |
Alloy Composition
| Carbon (C), % | 0 to 0.020 | |
| 0.050 to 0.25 |
| Chromium (Cr), % | 22 to 24 | |
| 27 to 30 |
| Cobalt (Co), % | 0 | |
| 48 to 52 |
| Iron (Fe), % | 0 to 1.5 | |
| 9.7 to 24.5 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 15 to 16.5 | |
| 0 to 0.5 |
| Nickel (Ni), % | 56.4 to 63 | |
| 0 to 4.0 |
| Niobium (Nb), % | 0 | |
| 0 to 0.5 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.5 to 1.5 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.030 |