G-CoCr28 Cobalt vs. AISI 414 Stainless Steel
G-CoCr28 cobalt belongs to the cobalt alloys classification, while AISI 414 stainless steel belongs to the iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is AISI 414 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 6.7 | |
| 17 |
| Fatigue Strength, MPa | 130 | |
| 430 to 480 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 83 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 560 | |
| 900 to 960 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 700 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 1200 | |
| 750 |
| Melting Completion (Liquidus), °C | 1330 | |
| 1440 |
| Melting Onset (Solidus), °C | 1270 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 8.5 | |
| 25 |
| Thermal Expansion, µm/m-K | 14 | |
| 10 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 100 | |
| 8.0 |
| Density, g/cm3 | 8.1 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 6.2 | |
| 2.1 |
| Embodied Energy, MJ/kg | 84 | |
| 29 |
| Embodied Water, L/kg | 440 | |
| 100 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 140 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
| 1260 to 1590 |
| Stiffness to Weight: Axial, points | 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 19 | |
| 32 to 34 |
| Strength to Weight: Bending, points | 19 | |
| 27 to 28 |
| Thermal Diffusivity, mm2/s | 2.2 | |
| 6.7 |
| Thermal Shock Resistance, points | 14 | |
| 33 to 35 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.25 | |
| 0 to 0.15 |
| Chromium (Cr), % | 27 to 30 | |
| 11.5 to 13.5 |
| Cobalt (Co), % | 48 to 52 | |
| 0 |
| Iron (Fe), % | 9.7 to 24.5 | |
| 81.8 to 87.3 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 to 4.0 | |
| 1.3 to 2.5 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.5 to 1.5 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |