| Class Name | UNS numbers | Composition | Typical Uses |
|
1. Coppers |
C80100 – C81100 |
>99% Copper |
Electrical & thermal conductors |
|
2. High-copper alloys |
C81300 – C82800 |
>94% Copper |
High strength electrical conductors, including spot welding electrodes |
|
3. Red Brasses |
C83300 – C85800 |
Cu – Zn – Sn –(Pb) (75 – 89% Cu) |
Valves, pump parts, plumbing hardware |
| Yellow brasses |
C85200 – C85800 |
Cu – Zn – Sn – (Pb) (57 – 74% Cu) |
Fittings, trim, builders hardware |
| 4. Manganese bronzes |
C86100 – C86800 |
Cu – Zn – Mn – Fe – (Pb) |
Gears, bearings, bushings, marine fittings |
|
Silicon bronzes, silicon brasses |
C87300 – C87900 |
Cu – Zn – Si |
Gears, bearings, bushings, marine fittings |
| Tin bronzes |
C90200 – C94500 |
Cu – Sn – Zn – (Pb) |
Gears, bearings, bushings, pump parts |
| Nickel – tin bronzes | C94700 – C94900 |
Cu – Ni – Sn – Zn – (Pb) |
Wear parts, low speed bearings |
| Aluminum bronzes | C95200 – C95810 |
Cu – Al – Fe – Ni |
Gears, bearings, bushings, pump parts, pickling equipment, non sparking tools |
| 5. Copper – nickels | C96200 – C96800 |
Cu – Ni – Fe |
Valves, pumps etc resistant to seawater |
| 6. Nickel silvers | C97300 – C97800 |
Cu – Ni – Zn – (Pb) – Sn |
Builders hardware, valves, pumps |
| Miscellaneous alloys | C99300 – C99750 |
Various |



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