Grade 8 Babbitt Metal vs. R31538 Cobalt
Grade 8 Babbitt Metal belongs to the otherwise unclassified metals classification, while R31538 cobalt belongs to the cobalt alloys. 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 grade 8 Babbitt Metal and the bottom bar is R31538 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 24 | |
| 220 |
| Poisson's Ratio | 0.41 | |
| 0.29 |
| Shear Modulus, GPa | 8.5 | |
| 86 |
| Tensile Strength: Yield (Proof), MPa | 23 | |
| 580 to 930 |
Thermal Properties
| Latent Heat of Fusion, J/g | 46 | |
| 320 |
| Melting Completion (Liquidus), °C | 270 | |
| 1360 |
| Melting Onset (Solidus), °C | 240 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 150 | |
| 450 |
| Thermal Conductivity, W/m-K | 24 | |
| 13 |
| Thermal Expansion, µm/m-K | 24 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 3.9 | |
| 8.1 |
| Embodied Energy, MJ/kg | 53 | |
| 110 |
| Embodied Water, L/kg | 840 | |
| 530 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 11 | |
| 750 to 1920 |
| Stiffness to Weight: Axial, points | 1.3 | |
| 15 |
| Stiffness to Weight: Bending, points | 9.2 | |
| 24 |
| Thermal Diffusivity, mm2/s | 16 | |
| 3.5 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Antimony (Sb), % | 14 to 16 | |
| 0 |
| Arsenic (As), % | 0.3 to 0.6 | |
| 0 |
| Bismuth (Bi), % | 0 to 0.1 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.15 to 0.35 |
| Chromium (Cr), % | 0 | |
| 26 to 30 |
| Cobalt (Co), % | 0 | |
| 58.7 to 68.9 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.1 | |
| 0 to 0.75 |
| Lead (Pb), % | 77.1 to 81.2 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 5.0 to 7.0 |
| Nickel (Ni), % | 0 | |
| 0 to 1.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.25 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Tin (Sn), % | 4.5 to 5.5 | |
| 0 |
| Zinc (Zn), % | 0 to 0.0050 | |
| 0 |