G-CoCr28 Cobalt vs. SAE-AISI 50B60 Steel
G-CoCr28 cobalt belongs to the cobalt alloys classification, while SAE-AISI 50B60 steel belongs to the iron alloys. 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 SAE-AISI 50B60 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 6.7 | |
| 12 to 20 |
| Fatigue Strength, MPa | 130 | |
| 240 to 330 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 83 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 560 | |
| 610 to 630 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 350 to 530 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1200 | |
| 410 |
| Melting Completion (Liquidus), °C | 1330 | |
| 1450 |
| Melting Onset (Solidus), °C | 1270 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 8.5 | |
| 45 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 100 | |
| 2.0 |
| Density, g/cm3 | 8.1 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 6.2 | |
| 1.4 |
| Embodied Energy, MJ/kg | 84 | |
| 19 |
| Embodied Water, L/kg | 440 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 | |
| 71 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 | |
| 330 to 750 |
| Stiffness to Weight: Axial, points | 15 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 19 | |
| 22 to 23 |
| Strength to Weight: Bending, points | 19 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 2.2 | |
| 12 |
| Thermal Shock Resistance, points | 14 | |
| 20 |
Alloy Composition
| Boron (B), % | 0 | |
| 0.00050 to 0.0030 |
| Carbon (C), % | 0.050 to 0.25 | |
| 0.56 to 0.64 |
| Chromium (Cr), % | 27 to 30 | |
| 0.4 to 0.6 |
| Cobalt (Co), % | 48 to 52 | |
| 0 |
| Iron (Fe), % | 9.7 to 24.5 | |
| 97.3 to 98.1 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0.75 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 to 4.0 | |
| 0 |
| Niobium (Nb), % | 0 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.5 to 1.5 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.040 |