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- 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. Note that in comparison bronze is principally an alloy of copper and tin. Despite this distinction, some types of brasses are called bronzes. 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, ammunition, and valves; for plumbing and electrical applications; and extensively in musical instruments such as horns and bells for its acoustic properties.
Brass has a muted yellow color, somewhat similar to gold. It is relatively resistant to tarnishing, and is often used as decoration and for coins.
Brass has likely been known to humans since prehistoric times, even before zinc itself was discovered. It was produced by melting copper together with calamine, a zinc ore. In the German village of Breinigerberg an ancient Roman settlement was discovered where a calamine ore mine existed. During the melting process, the zinc is extracted from the calamine and mixes with the copper. Pure zinc, on the other hand, has too low a boiling point to have been produced by ancient metalworking techniques. The many references to 'brass' appearing throughout the King James Bible are thought to signify another bronze alloy, or copper, rather than the strict modern definition of 'brass'.
- Bronze
From Wikipedia, the free encyclopedia
Bronze is any of a broad range of copper alloys, usually with tin as the main additive, but sometimes with other elements such as phosphorus, manganese, aluminium, or silicon. It was particularly significant in antiquity, giving its name to the Bronze Age. That name, in turn, is perhaps ultimately taken from the Persian word "birinj," meaning "copper".
- Belmont Metals Inc. - Non Ferrous Specialists since 1896 - is a manufacturer of standard & custom non ferrous metals and alloys for casting, plating, brazing, soldering, chemicals, and other uses. Our specialties are aluminum and alloys, brass and bronze, beryllium copper, boron copper, copper alloys, degasifier deoxidizers, jewelry alloys, lithium copper, nickel and alloys, sculpture alloys, tin shot, zinc and alloys.
- Concast Metal Products Company -- Manufactures of Continuous cast copper alloys including leaded bronze, aluminum bronze, manganese bronze, and no lead bronz -- Concast Metal Products Company is a manufacturer of specialty continuous-cast Copper Alloys. Our primary focus is the production of Copper Alloys in bars, rods, tubes and rectangles, as well as custom alloys. Concast sells its product lines through major metal distributors throughout North America and Europe as well as original equipment manufacturers.
- NMZ Copper Co., Ltd. -- NMZ Copper Co., Ltd. is committed to quality and achievement of excellence throughout all company activities. With the objective of providing our customers best products and services, NMZ Copper seeks to improve manufacturing processes, testing and measurement techniques and quality assurance all the time. NMZ Copper is a manufacturer of valves and fittings in China, supplies products in copper, brass and bronze. Custom of valve and fitting are available
- R.K. Alloys -- Non ferrous alloys manufacturer -- R.K. Alloys is proprietorship unit owned by Mrs. Kamlesh Goyal. It is a unit based in Barwala, Distt. Panchkula engaged in the manufacturing on non-ferrous alloys i.e. Brass Ingot, Zinc Ingot, Brass and Copper ingot and billets. . R. K. Alloys is the first unit of its type in Haryana manufacturing these items and the same has been registered under ISO 9001:2000
- SeoWon Co., Ltd -- leader of non-ferrous metal -- SeoWon Co., Ltd is a specialized manufacturer of non-ferrous metals associated with copper alloy
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