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page 2 of 2 issue date:4/5/01 white metal bearing alloys (babbitt metal) tin based alloys chemical composition (%) chart industry name astm b23 sn White metal bearing composition pdf Lamaline The composition of tribofilms produced on metal-on-metal hip bearings James Hesketha, *, Michael Wardb, Duncan Dowsona, Anne Nevillea aInstitute of Engineering Thermofluids Surfaces and Interfaces, Department of Mechanical