Brass is an alloy of copper and zinc. Some types of brass are called bronzes, despite their high zinc content.
Brass is a valuable manufacturing material because of its hardness and workability. Alpha brasses, with less than 40% zinc, are malleable and can be worked cold. Beta brasses, with a higher zinc content, can only be worked hot, but are harder and stronger. White brass, with more than 45% zinc, is too brittle for general use. Some types of brass have other metals added to modify their properties.
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.
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In the Bible, there are different versions of brass mentioned. In 2 Chronicles*, 4vs16 speaks of a "bright brass" in the verse, "The pots also, and the shovels, and the fleshhooks, and all their instrumnents, did Hu'ram his father make to king Solomon for the house of the LORD of bright brass." (KJV) *OT, written around 400 to 500 BC
Brass is the term used for alloys of copper and zinc in a solid solution.
Brass scrap is collected and transported to the foundry where it is melted and recast into billets.
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.
There is usually only one tuba in an orchestra, and it is used as the bass of the brass section, though its versatility means that it can be used to reinforce the strings and woodwind, or increasingly as a solo instrument.
Tubas are also used in wind and concert bands and in British style brass bands, although in the latter instance both Eb and BBb tubas are used, usually two of each.
In this context, the tuba was sometimes called "brass bass," as opposed to the double bass, which was called "string bass"; it was not uncommon for players to double on both instruments.
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