R31539 Cobalt vs. Grade 8 Babbitt Metal
R31539 cobalt belongs to the cobalt alloys classification, while grade 8 Babbitt Metal belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is R31539 cobalt and the bottom bar is grade 8 Babbitt Metal.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 24 |
| Poisson's Ratio | 0.29 | |
| 0.41 |
| Shear Modulus, GPa | 86 | |
| 8.5 |
| Tensile Strength: Yield (Proof), MPa | 590 to 940 | |
| 23 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 46 |
| Melting Completion (Liquidus), °C | 1360 | |
| 270 |
| Melting Onset (Solidus), °C | 1290 | |
| 240 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 150 |
| Thermal Conductivity, W/m-K | 13 | |
| 24 |
| Thermal Expansion, µm/m-K | 13 | |
| 24 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 10 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 3.9 |
| Embodied Energy, MJ/kg | 110 | |
| 53 |
| Embodied Water, L/kg | 530 | |
| 840 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 780 to 2000 | |
| 11 |
| Stiffness to Weight: Axial, points | 15 | |
| 1.3 |
| Stiffness to Weight: Bending, points | 24 | |
| 9.2 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 16 |
Alloy Composition
| Aluminum (Al), % | 0.3 to 1.0 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 | |
| 14 to 16 |
| Arsenic (As), % | 0 | |
| 0.3 to 0.6 |
| Bismuth (Bi), % | 0 | |
| 0 to 0.1 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.14 | |
| 0 |
| Chromium (Cr), % | 26 to 30 | |
| 0 |
| Cobalt (Co), % | 57.7 to 68.7 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 0 to 0.75 | |
| 0 to 0.1 |
| Lanthanum (La), % | 0.030 to 0.2 | |
| 0 |
| Lead (Pb), % | 0 | |
| 77.1 to 81.2 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Tin (Sn), % | 0 | |
| 4.5 to 5.5 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0050 |