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Columbia Encyclopedia entry: brass
Brass, alloy having copper (55%–90%) and zinc (10%–45%) as its essential components. The properties of brass vary with the proportion of copper and zinc and with the addition of small amounts of other elements, such as aluminum, lead, tin, or nickel. In general brass can be forged or hammered into various shapes, rolled into thin sheets, drawn into wires, and machined and cast. Its ductility reaches a maximum with about 30% zinc and its tensile strength with 45%—although this property varies greatly with the mechanical and heat treatment of the alloy. Cartridge brass (70% copper, 30% zinc) is used for cartridge cases, plumbing and lighting fixtures, rivets, screws, and springs. Aluminum brass (not exceeding 3% aluminum) has greater resistance to corrosion than ordinary brass. Brass containing tin (not exceeding 2%) is less liable to corrosion in seawater; it is sometimes called naval brass and is used in naval construction. Dutch metal (80%–85% copper, 15%–20% zinc) is used as a substitute for gold leaf. When iron is added to brass it produces hard, tough alloys. One of these is delta metal (55% copper, 41% zinc, 1%–3% iron, and fractional percentages of tin and manganese), which can be forged, rolled, or cast and is used for bearings, valves, and ship propellers.
Wikipedia search results for: Brass
From Wikipedia, the free encyclopedia
Brass is any alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. In comparison, bronze is principally an alloy of copper and tin. Despite this distinction some types of brasses are called bronzes and vice-versa. Brass is a substitutional alloy. It is used for decoration for its bright gold-like appearance; for applications where low friction is required such as locks, gears, bearings, doorknobs, ammunition, and valves; for plumbing and electrical applications; and extensively in musical instruments such as horns and bells for its acoustic properties. It is also used in zippers....more »
Columbia Encyclopedia search results: brass
Results 1 - 10  of 88
  • brasses, ornamental

    Brasses, ornamental. Brass, a copper-zinc alloy produced since imperial Roman times, is closely associated in art with bronze, a copper-tin alloy (see bronze sculpture). Brass was generally fa...

  • brasses, monumental

    Brasses, monumental, or sepulchral brasses, memorials to the dead, in use in churches on the Continent and in England in the 13th cent. and for several centuries following. They are usually se...

  • Tubal-cain

    Tubal-cain, in the New Testament, son of Lamech. He first worked brass and iron.

  • Bellwood

    Bellwood, residential village (1990 pop. 20,241), Cook co., NE Ill.; inc. 1900. Among Bellwood's manufactures are consumer goods, brass items, paper and concrete products, and adhesives.

  • wind instrument

    Wind instrument, in music, any instrument whose tone is produced by a vibrating column of air. In the pipe organ the column of air is set into vibration by mechanical means. Other wind instrum...

  • metalwork

    Metalwork. Copper, gold, and silver were probably fashioned into ornaments and amulets as early as the Neolithic period. Goldwork and silverwork have since employed the talents of leading arti...

  • flügelhorn

    Flügelhorn, three-valved brass instrument similar in size and shape to the trumpet but having a conical rather than a cylindrical bore and possessing a larger bell. Because of these difference...

  • Irvine, town, Scotland

    Irvine, town (1991 pop. 32,507), North Ayrshire, SW Scotland, on the Irvine River estuary. Industries include iron and brass foundries. Other products are chemicals, electric goods, and clothi...

  • Salem, city, India

    Salem, city (1991 pop. 578,291), Tamil Nadu state, SE India. There are manufactures in chemicals, electrical products, tools, and brass goods; handloom weaving remains a significant industry. ...

  • Stolberg

    Stolberg, city (1994 pop. 58,028), North Rhine–Westphalia, W Germany; chartered 1856. It is a center of the German brass industry, which was started (c.1600) there by Protestant settlers from ...

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