Austempered Cast Iron vs. Grade 8 Babbitt Metal
Austempered cast iron belongs to the iron alloys classification, while grade 8 Babbitt Metal belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is austempered cast iron and the bottom bar is grade 8 Babbitt Metal.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 270 to 490 | |
| 15 |
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 24 |
| Poisson's Ratio | 0.29 | |
| 0.41 |
| Shear Modulus, GPa | 62 to 69 | |
| 8.5 |
| Tensile Strength: Yield (Proof), MPa | 560 to 1460 | |
| 23 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 46 |
| Melting Completion (Liquidus), °C | 1380 | |
| 270 |
| Melting Onset (Solidus), °C | 1340 | |
| 240 |
| Specific Heat Capacity, J/kg-K | 490 | |
| 150 |
| Thermal Conductivity, W/m-K | 42 | |
| 24 |
| Thermal Expansion, µm/m-K | 13 | |
| 24 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 19 |
| Density, g/cm3 | 7.5 | |
| 10 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 3.9 |
| Embodied Energy, MJ/kg | 25 | |
| 53 |
| Embodied Water, L/kg | 48 | |
| 840 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 880 to 3970 | |
| 11 |
| Stiffness to Weight: Axial, points | 13 | |
| 1.3 |
| Stiffness to Weight: Bending, points | 25 | |
| 9.2 |
| Thermal Diffusivity, mm2/s | 11 | |
| 16 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.050 | |
| 0 to 0.0050 |
| Antimony (Sb), % | 0 | |
| 14 to 16 |
| Arsenic (As), % | 0 to 0.020 | |
| 0.3 to 0.6 |
| Bismuth (Bi), % | 0 | |
| 0 to 0.1 |
| Cadmium (Cd), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 3.4 to 3.8 | |
| 0 |
| Chromium (Cr), % | 0 to 0.1 | |
| 0 |
| Copper (Cu), % | 0 to 0.8 | |
| 0 to 0.5 |
| Iron (Fe), % | 89.6 to 94 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 | |
| 77.1 to 81.2 |
| Magnesium (Mg), % | 0 to 0.040 | |
| 0 |
| Manganese (Mn), % | 0.3 to 0.4 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.3 | |
| 0 |
| Nickel (Ni), % | 0 to 2.0 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Selenium (Se), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 2.3 to 2.7 | |
| 0 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 |
| Tin (Sn), % | 0 to 0.020 | |
| 4.5 to 5.5 |
| Vanadium (V), % | 0 to 0.1 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0050 |