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A bronze is an alloy of copper and other metals, most often tin, but also aluminium and silicon. Aluminium bronzes are alloys of copper and aluminium. The content of aluminium ranges mostly between 5% and 11%.
Islamic Golden Age brass astrolabe Brass lectern with an eagle. Attributed to Aert van Tricht, Limburg (Netherlands), c. 1500.. Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [1] but copper typically has the larger proportion, generally 66% copper and 34% zinc.
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloids (such as arsenic or silicon).
Italy pioneered the use for coinage of an aluminium-bronze alloy called bronzital (literally "Italian bronze") in its 5- and 10-centesimi from 1939. Its alloy was finalized in 1967 to 92% copper, 6% aluminium, and 2% nickel, [ 5 ] and was since used in the 20, 200 and 500 Italian Lira coins until 2001.
U.S. government bronze specification H is composed of 83% copper, 14% tin, 3% zinc, and 0.8% phosphorus. [4] Red brass is used to produce pipes, valves, and plumbing fixtures and is considered to offer a good mixture of corrosion resistance, strength and ease of casting. [5] It typically contains 85% copper, 5% tin, 5% lead, and 5% zinc.
Brown or black can be used as a base color for copper patina. If the amount of chlorides decreases the color will be more bluish-green, if carbonate decreases, more yellow-green. [27] Black for copper. Solution of sodium polysulfide 2.5%, items must be submerged in the solution after color developing, wash, dry and wax or varnish colored object ...
Bronze statue of the Roman Emperor Augustus. Bronze is a metallic brown color which resembles the metal alloy bronze. A bronze medal. The first recorded use of bronze as a color name in English was in 1753. [3]
Bronze (tin, aluminum or other element) Aluminium bronze ; Arsenical bronze (arsenic, tin) Bell metal ; Bismuth bronze ; Brastil (alloy, bronze) [5] [6] Florentine bronze (aluminium or tin) Glucydur (beryllium, iron) Guanín (gold, silver) Gunmetal (tin, zinc) Phosphor bronze (tin and phosphorus) Ormolu ; Silicon bronze (tin, arsenic, silicon)