Thursday 11 November 2010

Composition of Babbitt Materials

Babbitt alloys possess excellent conformability and embeddability. These materials are not used in applications where operating temperatures exceed 300°F, but have relatively low compressive and fatigue strength. The commonly used compositions of bearing materials are:
  • Tin-base babbitts with 89% Sn, 8% Pb and 3% Cu
  • Lead-base babbitts with 75% Pb, 15% Sb and 10% Sn
  • Copper alloys such as Cu- 10% to 15% Pb
Babbitts can also be made of other materials, such as tin or leaded bronze, copper lead alloy, aluminum bronze or alloys, and cast iron, which are widely used in many applications.

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