Research on Brass(percentage+application).

Alpha brasses with less than 35% zinc, are malleable, can be worked cold, and are used in pressing, forging, or similar applications.

Beta brasses, with 45–50% zinc content, can only be worked hot, and are harder, stronger, and suitable for casting.

Cartridge brass is a 30% zinc brass with good cold working properties. Used for ammunition cases.

High brass contains 65% copper and 35% zinc, has a high tensile strength and is used for springs, screws, and rivets.

Low brass is a copper-zinc alloy containing 20% zinc with a light golden color and excellent ductility; it is used for flexible metal hoses and metal bellows.

Manganese brass is a brass most notably used in making golden dollar coins in the United States. It contains roughly 70% copper, 29% zinc, and 1.3% manganese.

Muntz metal is about 60% copper, 40% zinc and a trace of iron, used as a lining on boats.

Nickel brass is composed of 70% copper, 24.5% zinc and 5.5% nickel used to make pound coins in the pound sterling currency.

Red brass is both an American term for the copper-zinc-tin alloy known as gunmetal, and an alloy which is considered both a brass and a bronze. It typically contains 85% copper, 5% tin, 5% lead, and 5% zinc.^[24] Red brass is also an alternative name for copper alloy C23000, which is composed of 14–16% zinc, 0.05% iron and lead, and the remainder copper.^[25] It may also refer to ounce metal, another copper-zinc-tin alloy.

Rich low brass (Tombac) is 15% zinc. It is often used in jewelry applications.

Tonval brass (also called CW617N or CZ122 or OT58) is a copper-lead-zinc alloy. It is not recommended for seawater use, being susceptible to dezincification.^[26][27]

White brass contains more than 50% zinc and is too brittle for general use. The term may also refer to certain types of nickel silver alloys as well as Cu-Zn-Sn alloys with high proportions (typically 40%+) of tin and/or zinc, as well as predominantly zinc casting alloys with copper additive.