This page will contain images about Brass, as they become available.

Brass

For other uses, see Brass (disambiguation).

Brass is the term used for alloys of copper and zinc in a solid solution. Typically it is more than 50% copper and from 5 to 20% zinc[1], in comparison to bronze which is principally an alloy of copper and tin.[2]. Despite this distinction, some types of brasses are called bronzes.


(L-R) Decorative brass paperweight, along with zinc and copper samples

Brass has a yellow colour, somewhat similar to gold. Because of this, and its relative resistance to tarnishing, it is often used as a decoration.

Brass has been known to man since prehistoric times, long before zinc itself was discovered. It was produced by melting copper together with calamine, a zinc ore. During this process, the zinc is extracted from the calamine and instantly mixes with the copper. Pure zinc, on the other hand, is too reactive to be produced by ancient metalworking techniques.

Properties

The malleablity and acoustic properties of brass have made it the metal of choice for brass musical instruments such as the tuba.

In some environments, brasses with higher content of zinc are prone to a selective leaching corrosion known as dezincification. In some territories, plumbing fittings designed to resist dezincification are embossed "CR" (corrosion resistant). A dezincified fitting has the pink appearance of pure copper and will easily crumble, being reduced to a weak sponge-like matrix. Brass is a versatile manufacturing material because of its hardness and workability.

Brass types

  • Admiralty brass contains 30% zinc and 1% tin which inhibits dezincification.
  • Alpha brasses (Prince's metal), with less than 35% zinc, are malleable, can be worked cold, and are used in pressing, forging, or similar. They contain only one phase, with face-centered cubic crystal structure.
  • Alpha-beta brass (Muntz metal), also called duplex brass, is 35-45 % zinc and is suited for hot working. It contains both α and β' phase; the β'-phase is body-centered cubic and is harder and stronger than α. Alpha-beta brasses are usually worked hot.
  • Aluminium brass contains aluminium, which improves its corrosion resistance.
  • Arsenical brass contains an addition of arsenic and frequently aluminium and is used for boiler fireboxes.
  • Beta brasses, with 45-50 % zinc content, can only be worked hot, is harder, stronger, and suitable for casting.
  • Cartridge brass is a 30% zinc brass with good cold working properties.
  • Common brass, or rivet brass, is a 37% zinc brass, cheap and standard for cold working.
  • High brass, contains 65% copper and 35% zinc, has a high tensile strength and is used for springs, screws, rivets.
  • Leaded brass is an alpha-beta brass with addition of lead. It has excellent machinability.
  • Low brass is a copper-zinc alloy containing 20% zinc with a light golden color, excellent ductility and is used for flexible metal hoses and metal bellows.
  • Naval brass, similar to admiralty brass, is a 40% zinc brass and 1% tin.
  • Red brass is an American term for CuZnSn alloy known as gunmetal.
  • White brass contains more than 50 % zinc and is too brittle for general use.
  • Yellow brass is an American term for 33% zinc brass.

This page about Brass includes information from a Wikipedia article.
Additional articles about Brass
News stories about Brass
External links for Brass
Videos for Brass
Wikis about Brass
Discussion Groups about Brass
Blogs about Brass
Images of Brass

Brass is a versatile manufacturing material because of its hardness and workability. People and things commonly known as Caprice include:. A dezincified fitting has the pink appearance of pure copper and will easily crumble, being reduced to a weak sponge-like matrix. Caprice — a pink-coloured wine blend. In some territories, plumbing fittings designed to resist dezincification are embossed "CR" (corrosion resistant). A short instrumental piece, see Capriccio. In some environments, brasses with higher content of zinc are prone to a selective leaching corrosion known as dezincification. Chevrolet Caprice — model of sedan style car built from 1965-1996.

The malleablity and acoustic properties of brass have made it the metal of choice for brass musical instruments such as the tuba. Caprice Bourret — American model and actress. . Pure zinc, on the other hand, is too reactive to be produced by ancient metalworking techniques. During this process, the zinc is extracted from the calamine and instantly mixes with the copper.

It was produced by melting copper together with calamine, a zinc ore. Brass has been known to man since prehistoric times, long before zinc itself was discovered. Because of this, and its relative resistance to tarnishing, it is often used as a decoration. Brass has a yellow colour, somewhat similar to gold.


. Despite this distinction, some types of brasses are called bronzes. Typically it is more than 50% copper and from 5 to 20% zinc[1], in comparison to bronze which is principally an alloy of copper and tin.[2]. Brass is the term used for alloys of copper and zinc in a solid solution.

Yellow brass is an American term for 33% zinc brass. White brass contains more than 50 % zinc and is too brittle for general use. Red brass is an American term for CuZnSn alloy known as gunmetal. Naval brass, similar to admiralty brass, is a 40% zinc brass and 1% tin.

Low brass is a copper-zinc alloy containing 20% zinc with a light golden color, excellent ductility and is used for flexible metal hoses and metal bellows. It has excellent machinability. Leaded brass is an alpha-beta brass with addition of lead. High brass, contains 65% copper and 35% zinc, has a high tensile strength and is used for springs, screws, rivets.

Common brass, or rivet brass, is a 37% zinc brass, cheap and standard for cold working. Cartridge brass is a 30% zinc brass with good cold working properties. Beta brasses, with 45-50 % zinc content, can only be worked hot, is harder, stronger, and suitable for casting. Arsenical brass contains an addition of arsenic and frequently aluminium and is used for boiler fireboxes.

Aluminium brass contains aluminium, which improves its corrosion resistance. Alpha-beta brasses are usually worked hot. It contains both α and β' phase; the β'-phase is body-centered cubic and is harder and stronger than α. Alpha-beta brass (Muntz metal), also called duplex brass, is 35-45 % zinc and is suited for hot working.

They contain only one phase, with face-centered cubic crystal structure. Alpha brasses (Prince's metal), with less than 35% zinc, are malleable, can be worked cold, and are used in pressing, forging, or similar. Admiralty brass contains 30% zinc and 1% tin which inhibits dezincification.