G-CoCr28 Cobalt vs. Nickel 690
G-CoCr28 cobalt belongs to the cobalt alloys classification, while nickel 690 belongs to the nickel alloys. They have 40% of their average alloy composition in common. There are 27 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 G-CoCr28 cobalt and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 200 |
| Elongation at Break, % | 6.7 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 130 | |
| 180 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 83 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 560 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 1200 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1330 | |
| 1380 |
| Melting Onset (Solidus), °C | 1270 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 8.5 | |
| 14 |
| Thermal Expansion, µm/m-K | 14 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 100 | |
| 50 |
| Density, g/cm3 | 8.1 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 6.2 | |
| 8.2 |
| Embodied Energy, MJ/kg | 84 | |
| 120 |
| Embodied Water, L/kg | 440 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 15 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 19 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 2.2 | |
| 3.5 |
| Thermal Shock Resistance, points | 14 | |
| 16 to 25 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.25 | |
| 0 to 0.050 |
| Chromium (Cr), % | 27 to 30 | |
| 27 to 31 |
| Cobalt (Co), % | 48 to 52 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 9.7 to 24.5 | |
| 7.0 to 11 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 to 4.0 | |
| 58 to 66 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0.5 to 1.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |