phosphor bronze

plural phosphor bronzes

1. countableuncountableAny alloy of copper with 3.5 to 10% tin and up to 1% phosphorus, notable for toughness, strength, low coefficient of friction, and fine grain.

   The connecting rods are one-piece forgings of alloy steel with a copper/lead steel-backed bearing at the large end and a phosphor-bronze bush at the small end.

   1958 April 28, “British Railways First Main-Line Diesel-Hydraulic Locomotive”, in Railway Magazine, page 265

   1 more example

   The weight of the body and the traction and braking forces are taken by the conventional dished bogie centre pivot with phosphor-bronze liner; this type of centre pivot facilitates passage over marshalling yard humps.

   1962 December, “The B.R. standard diesel-electric Type 1 locomotive”, in Modern Railways, page 382