Babbitt is a white metal alloy, or bearing material, that is typically used as a thin surface layer in complex, multi-metal structures. The original formula, created by Isaac Babbitt, was 89.3% tin, 7.1% antimony, and 3.6% copper. However, lead can sometimes replace tin.
Babbitt bearings are known for their soft composition. Though it is generally soft, it’s made up of small hard crystals that are dispersed in a matrix of softer alloy. Babbitt alloys offer corrosion resistance, excellent wetting, low wear, and friction resistance.
Babbitt Applications
Babbitt metal is used as the lining for bearing shells of cast iron, steel, and bronze. They’re also used for bearing assembly and repair and in capacitor manufacturing. Babbitt is also preferred for use under steady load conditions in electric motors, steam and gas turbines, pumps, and blowers.
Grade 2 Babbitt
Grade 2 Babbitt is a lead-free alloy ideal for resurfacing Babbitt Bearings and meets ASTM B23 Standards.
- Lead Free 88-90% Sn/7-8% Sb/ 3-4% Cu
- Available in notch bar, and wire
Nickel Babbitt
This alloy is similar to Grade 2 Babbitt, but with a little nickel added for higher tensile strength over 300F.
- 88-90% Sn/ 7-8% Sb/3-4% Cu and .3-.5%.Â
- Available in Notch bars (typically about 6lbs each)
If you are looking for a Babbitt alloy that is not listed, please let us know.
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