Brass Series

Brass is an alloy of copper and zine, in proportions which can be varied to achieve varying mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other within the same crystal structure.

Brass is similar to bronze, another alloy containing copper that uses tin instead of zinc. Both bronze and brass also may include small proportions of a range of other elements including arsenic, lead,phosphorus , aluminum, manganese, and silicon. Historically, the distinction between the two alloys has been less consistent and clear, and modern practice in museums and archaeology increasingly avoids both terms for historical objects in favor of the more general "copper alloy".

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Grade list of copper and copper alloys by country
Classification	China	Germany	America	Japan	England	Europe	International
oxygen free copper	TU1	2.0076	C10200	C1020R	C103
	TU2	Cu-OF-H110	C11000	c1011	C101
	Vacuum oxygen free copper	E-Cu58	TU00	c1020	6N
	high purity	copper-OFE	c10500	c10700
Silver copper	TAg 0.1	CuAg 0.1	C10400	C1040		CuAg 0.1
brass	H90	CuZn10	C22000	C2200	CZ101	CuZn10	CW501L
	H70	CuZn30	C26000	C2600	CZ106	CuZn30	CW505L
	H68		C26200	C2620		CuZn33	CW506L
	H65	CuZn35	C27000	C2700	CZ107	CuZn36	CW507L
	H63	CuZn37	C27200	C2720	CZ108	CuZn37	CW508L
	H62	CuZn40	C28000	C2800	CZ109		CW509L
bronze	QSn4-0.3	CuSn4	C51100	C5111	PB101	CuSn4	CW450K
	QSn4-0.3	CuSn5	C51000	C5101		CuSn5	CW451K
	QSn6.5-0.1	CuSn6	C51900	C5191	PB103	CuSn6	CW452K
	QSn8-0.3	CuSn8	C52100	C5210		CuSn8	CW453K
	QSn6.5-0.4
copper-nickel	BZn18-18	CuNi18Zn20	C75200	C7521	NS106	CuNi18Zn20
	BZn18-26	CuNi18Zn27	C77000	C7701	NS107	CuNi18Zn27	CW410J
	BZn15-20		C7541		CW409J
	BZn18-10			C7350
pure copper	TU2	OF-Cu58	C10100	C1011	C101	CW008A	copper oxide
	T2	SW——copper	C11000	C1100	C101		copper - FRHC
	TP2	SF-Cu	C12200	C1220	C106	CW024A	copper - DHP
	TP1	SW-copper	C12000	C1201		CW023A	copper DLP

1. Brass has long been a popular material for decoration due to its bright, gold-like appearance; being used for drawer pulls and doorknobs. It has also been widely used to make utensils due to properties such as having a low melting point, high workability (both with hand tools and with modern turning and milling machines), durability, and electrical and thermal conductivity.

2. such as horns and bells, and also used as a substitute for copper in making costume jewelry, fashion jewelry, and other imitation jewelry. The composition of brass, generally 66% copper and 34% zinc, makes it a favorable substitute for copper based jewelry, as it exhibits greater resistance to corrosion. Brass is often used in situations in which it is important that sparks not be struck, such as in fittings and tools used near flammable or explosive materials.

Brass is more malleable than bronze or zinc. The relatively low melting point of brass (900 to 940 °C, 1,650 to 1,720 °F, depending on composition) and its flow characteristics make it a relatively easy material to cast. By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is 8.4 to 8.73 g/cm3 (0.303 to 0.315 lb/cu in).

Today, almost 90% of all brass alloys are recycled.Because brass is not ferromagnetic, it can be separated from ferrous scrap by passing the scrap near a powerful magnet. Brass scrap is collected and transported to the foundry, where it is melted and recast into billets. Billets are heated and extruded into the desired form and size. The general softness of brass means that it can often be machined without the use of cutting fluid, though there are exceptions to this.