Designation
- Grade
- C83600
- UNS
- C83600
- Standard
- ASTM B584
- Family
- Copper-based alloys
- Density
- ≈ 8.83 g/cm³
- Usual delivery condition
- As cast
Chemical composition
| Element | Mass fraction, % |
|---|---|
| Cu | 84.0–86.0 |
| Sn | 4.0–6.0 |
| Pb | 4.0–6.0 |
| Zn | 4.0–6.0 |
Main elements only. Phosphorus, sulphur and residual-element limits are specified in the standard and are not reproduced here.
Mechanical properties
| Condition | Tensile strength Rm, min. (MPa) | Yield strength Rp0.2, min. (MPa) | Elongation, min. (%) |
|---|---|---|---|
| As cast | 205 | 95 | 20 |
Minimum values (or ranges) for separately cast test bars as specified in ASTM B584.
Characteristics
- Corrosion and oxidation behaviour
- Moderate resistance: atmosphere, fresh water and mild media
- Weldability
- Limited; crack-sensitive, welding only by agreement
- Machinability
- Good in the appropriate heat-treatment condition
- Typical applications
- Fittings Valves Wear parts General engineering
International cross-reference
| System | Designation | Relationship |
|---|---|---|
| EN | CC491K (CuSn5Zn5Pb5-C), EN 1982 | Similar composition |
| JIS | CAC406 (H 5120) | Similar composition |
Casting and processing considerations
Aluminium bronzes form tenacious oxide films, so turbulence-free filling is essential to avoid oxide inclusions. Leaded alloys are restricted in drinking-water and some regional applications; the applicable regulations should be checked before an alloy is specified. Listed strength values originate from sand-casting specifications and are indicative for investment castings.
Reference data compiled from the cited standards for orientation. Always work from the current edition of the governing specification; values are not a guaranteed LOSTWAX delivery specification.