Designation
- Grade
- C95400
- UNS
- C95400
- Standard
- ASTM B148
- Family
- Copper-based alloys
- Density
- ≈ 7.45 g/cm³
- Usual delivery condition
- As cast
Chemical composition
| Element | Mass fraction, % |
|---|---|
| Cu | ≥ 83.0 |
| Al | 10.0–11.5 |
| Fe | 3.0–5.0 |
| Ni | ≤ 1.5 |
| Mn | ≤ 0.50 |
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 | 515 | 205 | 12 |
Minimum values (or ranges) for separately cast test bars as specified in ASTM B148.
Characteristics
- Corrosion and oxidation behaviour
- Very good resistance in seawater and chloride-bearing media
- Weldability
- Possible with qualified procedure; preheat and/or post-weld heat treatment as specified
- Machinability
- Moderate; work hardening or built-up edge to be considered
- Typical applications
- Wear parts Gears and drives Valves Marine
International cross-reference
| System | Designation | Relationship |
|---|---|---|
| EN | CC331G (CuAl10Fe2-C), EN 1982 | Comparable properties |
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.