Babbitt Grade 7 (Pb-9.3Sn-15Sb) lead-base vs Babbitt Grade 8 (Pb-5Sn-15Sb) lead-base
Property comparison of Babbitt Grade 7 (Pb-9.3Sn-15Sb) lead-base and Babbitt Grade 8 (Pb-5Sn-15Sb) lead-base, both tin alloy.
| Property | Babbitt Grade 7 (Pb-9.3Sn-15Sb) lead-base | Babbitt Grade 8 (Pb-5Sn-15Sb) lead-base | Difference |
|---|---|---|---|
| Yield strength | 24 MPa | 18 MPa | -25% |
| Tensile strength | 72 MPa | 70 MPa | -3% |
| Elongation | 4 % | 5 % | +25% |
| Density | 10,000 kg/m³ | 10,000 kg/m³ | 0% |
| Brinell hardness | 22.5 HB | 20 HB | -11% |
| Coefficient of thermal expansion | 0.000026 1/K | 0.000026 1/K | 0% |
| Melting point | 254 °C | 255 °C | 0% |
Difference is Babbitt Grade 8 (Pb-5Sn-15Sb) lead-base relative to Babbitt Grade 7 (Pb-9.3Sn-15Sb) lead-base. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- grade
- Grade 7 lead-base
- standard
- ASTM B23
- heat treatment
- chill cast
- grade
- Grade 8 lead-base
- standard
- ASTM B23
- heat treatment
- chill cast
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