Grade 8 Babbitt Metal vs. R30155 Cobalt
Grade 8 Babbitt Metal belongs to the otherwise unclassified metals classification, while R30155 cobalt belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is grade 8 Babbitt Metal and the bottom bar is R30155 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 15 | |
| 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 24 | |
| 210 |
| Poisson's Ratio | 0.41 | |
| 0.29 |
| Shear Modulus, GPa | 8.5 | |
| 81 |
| Tensile Strength: Yield (Proof), MPa | 23 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 46 | |
| 300 |
| Melting Completion (Liquidus), °C | 270 | |
| 1470 |
| Melting Onset (Solidus), °C | 240 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 150 | |
| 450 |
| Thermal Conductivity, W/m-K | 24 | |
| 12 |
| Thermal Expansion, µm/m-K | 24 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 80 |
| Density, g/cm3 | 10 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 3.9 | |
| 9.7 |
| Embodied Energy, MJ/kg | 53 | |
| 150 |
| Embodied Water, L/kg | 840 | |
| 300 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 11 | |
| 370 |
| Stiffness to Weight: Axial, points | 1.3 | |
| 14 |
| Stiffness to Weight: Bending, points | 9.2 | |
| 23 |
| Thermal Diffusivity, mm2/s | 16 | |
| 3.2 |
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 | |
| 0.080 to 0.16 |
| Chromium (Cr), % | 0 | |
| 20 to 22.5 |
| Cobalt (Co), % | 0 | |
| 18.5 to 21 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.1 | |
| 24.3 to 36.2 |
| Lead (Pb), % | 77.1 to 81.2 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 2.5 to 3.5 |
| Nickel (Ni), % | 0 | |
| 19 to 21 |
| Niobium (Nb), % | 0 | |
| 0.75 to 1.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 | |
| 0.75 to 1.3 |
| Tin (Sn), % | 4.5 to 5.5 | |
| 0 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.0 |
| Zinc (Zn), % | 0 to 0.0050 | |
| 0 |