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Standard For Brass

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Standard For Brass

Brass standard is a standard rule formulated by the relevant state departments to regulate the brass industry. It is of great significance for the harmonious, stable and unified development of the brass market.


Brass is an alloy of copper and zinc. If brass is composed of copper and zinc, it is called ordinary brass. Brass is often used in the manufacture of valves, water pipes, connecting pipes of internal and external air conditioners and radiators.


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 solution and have good cold working properties. For example, 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.


Ordinary brass can be divided into different brands according to the different contents of copper and zinc. Including: H59, H63, H65, H68, H70, H85, H96 and so on.

H63 Brass Standard: (GB/T 5231-2001)

H65 Brass Standard: GB/T 5231-2001

H59 Brass Standard: GB/T 2041-1989

H68 Brass Standard: GB/T 14954-1994

H70 Brass Standard: GB/T 2059-2000

H85 Brass Standard: GB/T 5231-2001

H96 Brass Standard: GB/T 1527-1997


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