white metal

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Babbitt metal

Babbitt metal, an antifriction metal first produced by Isaac Babbitt in 1839. In present-day usage the term is applied to a whole class of silver-white bearing metals, or “white metals.” These alloys usually consist of relatively hard crystals embedded in a softer matrix, a structure important for machine bearings. They are composed primarily of tin, copper, and antimony, with traces of other metals added in some cases and lead substituted for tin in others.
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white metal

[′wīt ‚med·əl]
(metallurgy)
Any of several white-colored metals and their alloys of relatively low melting points, such as lead, tin, antimony, and zinc.
A copper matte of about 77% copper, obtained from the smelting of sulfide copper ores.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.