Copper alloys
Bronzes, gunmetals and brasses: bearings, bushes, valves and fittings.
Cast bronzes and gunmetals (EN 1982)
The designation names the casting method: GS sand, GM permanent mould, GZ centrifugal, GC continuous. Faster solidification gives higher strength.
| Grade | Standard | 0.2 % proof strength | Tensile strength | Evidence |
|---|---|---|---|---|
| CuSn7Zn4Pb7-C (Rg7) Leaded gunmetal (Rotguss) for plain bearings and bushes: Rp0.2 120 MPa, Rm 230 MPa sand cast, 260 MPa continuously cast. |  EN 1982 | ≥ 120 MPa2 | ≥ 230 MPa1 |
|
Planned groups
- CuSn8 phosphor bronze, CuSn12-C, CuAl10Fe5Ni5-C aluminium bronze
- Brasses CuZn39Pb3, CuZn37; Cu-ETP and Cu-DHP copper