Grade 7 Babbitt Metal vs. ASTM A387 Grade 21 Steel
Grade 7 Babbitt Metal belongs to the otherwise unclassified metals classification, while ASTM A387 grade 21 steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is grade 7 Babbitt Metal and the bottom bar is ASTM A387 grade 21 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 23 | |
| 150 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 26 | |
| 190 |
| Poisson's Ratio | 0.4 | |
| 0.29 |
| Shear Modulus, GPa | 9.1 | |
| 74 |
| Tensile Strength: Yield (Proof), MPa | 25 | |
| 230 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 48 | |
| 260 |
| Melting Completion (Liquidus), °C | 270 | |
| 1470 |
| Melting Onset (Solidus), °C | 240 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 150 | |
| 470 |
| Thermal Expansion, µm/m-K | 26 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 23 | |
| 4.1 |
| Density, g/cm3 | 10 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 4.4 | |
| 1.8 |
| Embodied Energy, MJ/kg | 62 | |
| 23 |
| Embodied Water, L/kg | 880 | |
| 62 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 12 | |
| 140 to 320 |
| Stiffness to Weight: Axial, points | 1.4 | |
| 13 |
| Stiffness to Weight: Bending, points | 9.6 | |
| 24 |
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 | |
| 0.050 to 0.15 |
| Chromium (Cr), % | 0 | |
| 2.8 to 3.3 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.1 | |
| 94.4 to 96 |
| Lead (Pb), % | 71.9 to 76.4 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0.3 to 0.6 |
| Molybdenum (Mo), % | 0 | |
| 0.9 to 1.1 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 | |
| 0 to 0.025 |
| Tin (Sn), % | 9.3 to 10.7 | |
| 0 |
| Zinc (Zn), % | 0 to 0.0050 | |
| 0 |