Characteristic
The main areas of application are water and steam fitting housings up to 255 °C, pump
housing and thin-walled, intricate casting and turned parts for mechanical and apparatus
engineering and shipbuilding.
| Common name | Material description | World specifications: European | World specifications: British | World specifications: American |
| Leaded bronze / Gun Metal | CuSn5Zn5Pb5 | CC491K / CB491K (EN 1982) | LG2 (BS 1400) | C83600 (ASTM B 505) |
Other name: SS 5204-15, JIS BC6, GOST BrO5Z5S5, AS C83600A, NS 16530, БрО5Ц5С5, G-CuSn5ZnPb.
The equivalence between the standards is not absolute and some variations in composition can exist.
Similar or Equivalent Specifications
| UNS | ASTM | SAE | AMS | Federal | Military | Other |
| C83600 | B505 |
Chemical Composition
| Cu* | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | |
| Min | 83.0 | 4.0 | 4.0 | 4.0 | – | – | – | – | – | – | – | – |
| Max | 87.0 | 6.0 | 6.0 | 6.0 | 2.0 | 0.01 | 0.3 | – | 0.1 | 0.1 | 0.01 | 0.25 |
Mechanical Properties
| Rm | Tensile strength min. | 250 N/mm2 |
| Rp0.2 | Proof Strength min. | 110 N/mm2 |
| A(50mm) | Elongation min. | 13% |
| HB | Brinell hardness min. | 65 HBW |
Properties:
- engineering material with the highest elongation;
- corrosion and water proof;
- for air gas and water fittings.
Application:
- low-pressure valves;
- pipe fittings;
- gasoline and oil-line fittings;
- fire extinguishing equipment fittings;
- small gears;
- pump parts;
- general plumbing.