Baily’s metal

== Anglais == === Étymologie === (ca. 1853) Du nom de Sir Francis Baily. La déformation Bailey’s metal apparaît aux alentours de 1880. === Locution nominale === Baily’s metal (Métallurgie) Métal de Baily : alliage de 16 parties de cuivre pour 2,5 parties d’étain et une partie de zinc, qui possède un coefficient d’expansion thermique très faible et une excellente rigidité. It will be remembered that the destruction of the Houses of Parliament by fire in 1834 proved fatal to the Standard Yard and Pound. […] The standard-yard measure is defined by the interval between two lines upon a bar of gun-metal. […] On the upper surface of the bar, the following inscription is engraved:Copper, - - - - - 16 oz.Tin, - - - - - 2½Zinc, - - - - - 1Mr. Baily’s metal.The standard yard at 62°.10 Fahrenheit, cast in 1845. Troughton & Simms, London.It is necessary to observe that, although the bar was cast so long ago as 1845, the standard yard has been completed only very lately. — (Hamilton L. Smith, éditeur, The Annals of Science, vol. II, no. 4 (avril), Harris & Fairbanks, Cleveland (OH), 1854, p. 92) ==== Variantes ==== Bailey’s metal