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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 2 ⁄ 3 copper and 1 ⁄ 3 zinc.
Of the large number of different types, the best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead. Both of these are imprecise terms. Latten is a further term, mostly used for coins with a very high copper content.
Brass is a substitutional alloy used for decorations and jewellery. Brass is an excellent electrical and thermal conductor because copper has a simple FCC crystal structure. Silver is the best electrical conductor. Copper can conduct 97% of the amount of electricity that silver can conduct. Common uses include manufacture of rod, wire, sheet ...
Modern brass instruments generally come in one of two families: Valved brass instruments use a set of valves (typically three or four but as many as seven or more in some cases) operated by the player's fingers that introduce additional tubing, or crooks, into the instrument, changing its overall length.
Hiduminium or R.R. alloys (2% copper, iron, nickel): used in aircraft pistons; Hydronalium (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion; Italma (3.5% magnesium, 0.3% manganese): formerly used to make coinage of the Italian lira; Magnalium (5-50% magnesium): used in airplane bodies, ladders, pyrotechnics ...
Since brass is pretty resilient, you can often use tougher bristles, but it's always safer to start with a softer toothbrush and work your way up. Then, you can go in with your cleaning solution ...
Because of its hardness, it is used for most clarinet, flute, oboe and similar wind instrument keys, normally silver-plated. It is used to produce the tubes (called staples) onto which oboe reeds are tied. Many parts of brass instruments are made of nickel silver, such as tubes, braces or valve mechanism.
Trombonist playing with a straight mute, the most common brass mute. A mute is a device attached to a musical instrument which changes the instrument's tone quality (timbre) or lowers its volume. Mutes are commonly used on string and brass instruments, especially the trumpet and trombone, and are occasionally used on woodwinds. Their effect is ...