TYPE |
Copper (%) |
Zinc (%) |
OTHER |
USE |
Aich””s alloy |
60.66 |
36.58 |
1.02% tin, 1.74% iron |
Designed for use in marine service owing to its corrosion resistance, hardness and toughness. A characteristic application is to the protection of ships”” bottoms, but more modern methods of cathodic protection have rendered its use less common. Its appearance resembles that of gold. |
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|
|
|
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Cartridge brass |
70 |
30 |
|
Good cold working properties. Used for ammunition cases. |
Common brass |
|
37 |
|
Also called rivet brass . Cheap and standard for cold working. |
|
|
|
|
|
Gilding metal |
95 |
5 |
|
Softest type of brass commonly available. Gilding metal is typically used for ammunition bullet “jackets”, e.g. , full metal jacket bullets. |
High brass |
65 |
35 |
|
Has a high tensile strength and is used for springs , screws , and rivets . |
Leaded brass |
|
|
lead |
An alpha-beta brass with an addition of lead . It has excellent machinability. |
Lead-free brass |
|
|
<0.25% lead |
Defined by California Assembly Bill AB 1953 contains “not more than 0.25 percent lead content”. |
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|
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Manganese brass |
70 |
29 |
1.3% manganese |
Most notably used in making golden dollar coins in the United States. |
Muntz metal |
60 |
40 |
traces of iron |
Used as a lining on boats. |
Naval brass |
59 |
40 |
1% tin |
Similar to admiralty brass. |
Nickel brass |
70 |
24.5 |
5.5% nickel |
Used to make pound coins in the pound sterling currency. |
Nordic gold |
89 |
5 |
5% aluminium, 1% tin |
Used in 10, 20, and 50 cents euro coins . |
Prince””s metal |
75 |
25 |
|
A type of alpha brass. Due to its yellow color, it is used as an imitation of gold. Also called Prince Rupert””s metal , the alloy was named after Prince Rupert of the Rhine . |
Red brass |
85 |
5 |
5% tin, 5% lead |
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. 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. It may also refer to ounce metal , another copper-zinc-tin alloy. |
Rich low brass, Tombac |
|
5–20 |
|
Often used in jewelry applications. |
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|
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Yellow brass |
67 |
33 |
|
An American term for 33% zinc brass. |