phosphor bronze

WordReference Random House Unabridged Dictionary of American English © 2025

phos′phor bronze′, 

1. Metallurgy a bronze, composed of about 80 percent copper, 10 percent tin, 9 percent antimony, and 1 percent phosphorus, having great hardness and resistance to corrosion.

• 1870–75

Collins Concise English Dictionary © HarperCollins Publishers::

phosphor bronze noun

1. any of various hard corrosion-resistant alloys containing copper, tin (2–8 per cent), and phosphorus (0.1–0.4 per cent): used in gears, bearings, cylinder casings, etc