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Why brass wear resistance is better

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Why brass wear resistance is better

Release date:2019-09-19 09:21 source:Original click:

Brass is a copper alloy with zinc as the main additive element. It has a beautiful yellow color and is collectively called brass. Copper-zinc binary alloy is called ordinary brass or simple brass. The brass above three yuan is called special brass or complex brass. Brass alloys containing less than 36% zinc are composed of solid solutions, copper alloys

  It has good cold working performance, such as brass containing 30% zinc is often used to make cartridge case, commonly known as cartridge case brass or 73 brass. Brass alloys with zinc content ranging from 36% to 42% consist of solid solutions, of which 64 brass with zinc content of 40% is the most commonly used. In order to improve the properties of ordinary brass, other elements such as aluminum, nickel, manganese, tin, silicon and lead are often added. Aluminum can improve the strength, hardness and corrosion resistance of brass, but reduce the plasticity. It is suitable for use as condensing tubes and other corrosion resistant parts of seagoing vessels. Tin can improve the strength of brass and corrosion resistance to sea water, so it is called naval brass. It is used as marine thermal equipment and propeller. Lead improves the cutting performance of brass; this free-cutting brass is often used as a part of clocks and watches. Brass castings are often used to make valves and pipe fittings. The crescent wrench for fire hydrant and explosion-proof is made of brass and aluminium.

  

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