C63000 is a high-strength nickel-aluminum bronze alloy engineered for heavy-duty industrial and aerospace applications. Governed by theASTM B150/B150Mstandard for rods, bars, and shapes, this alloy is characterized by its exceptional mechanical properties, resistance to seawater corrosion, and stability at elevated temperatures.
1. Composizione chimica
The alloy’s performance is derived from a precise metallurgical balance of Aluminum, Nickel, and Iron.
| Elemento | Symbol | Contenuto (%) |
|---|---|---|
| Rame | Insieme a | Resto |
| Alluminio | Al | 9.0 – 11.0 |
| Nickel (incl. Co) | Ni | 4.0 – 5.5 |
| Ferro da stiro | Fe | 2.0 – 4.0 |
| Manganese | mn | 1.5 Max |
| Zinco | Zn | 0.30 Max |
| Stagno | Sn | 0.20 Max |
2. Mechanical Properties (ASTM B150 Standard)
C63000 offers one of the highest strength-to-weight ratios among copper-based alloys.
| Proprietà | Valore metrico | Valore imperiale |
|---|---|---|
| Resistenza alla trazione | 690 – 900 MPa | 100,000 – 130,000 psi |
| Limite di snervamento (compensazione dello 0,2%) | 345 – 550 MPa | 50,000 – 80,000 psi |
| Elongation (in 2″ or 50mm) | 5% – 15% | 5% – 15% |
| Brinell Hardness (3000kg) | 180 – 250 HBW | 180 – 250 HBW |
| Modulo di elasticità | 117 GPa | 17.000 ksi |
3. Proprietà fisiche
| Proprietà | Value (Metric) | Value (Imperial) |
|---|---|---|
| Densità | 7,58 g/cm³ | 0.274 lb/in³ |
| Punto di fusione (liquido) | 1,054 °C | 1,930 °F |
| Conduttività termica | 37.7 W/m·K | 21.8 Btu/ft²/ft/hr/°F |
| Conduttività elettrica | 7% IACS | 7% IACS |
| Capacità termica specifica | 377 J/kg·K | 0.09 Btu/lb/° F. |
4. Fabrication & Thermal Characteristics
C63000 is primarily worked through hot-forming processes and responds well to specific joining techniques.
- Lavorabilità:20% (Relative to C36000 Free Cutting Brass).
- Hot Working Temperature:788°C – 927°C (1450°F – 1700°F).
- Annealing Temperature:593°C – 704°C (1100°F – 1300°F).
- Welding Suitability:Excellent for Gas Shielded Arc (TIG/MIG) and Coated Metal Arc welding; not recommended for Oxyacetylene or Soldering.
5. Comparative Standards
| Region/Standard | Designazione |
|---|---|
| noi | C63000 |
| Aerospaziale | AMS 4640 |
| European (EN) | CW307G / CuAl10Ni5Fe4 |
| British (BS) | CA 104 |
| ISO | CuAl10Ni5Fe4 |
6. Technical Performance Features
- Resistenza alla corrosione:Outstanding resistance to impingement, stress corrosion cracking, and cavitation in seawater and brackish water.
- Anti-Galling Properties:Exceptional metal-to-metal wear characteristics, making it ideal for non-lubricated or poorly lubricated environments.
- Elevated Temperature Strength:Retains significant tensile and yield strength at temperatures up to 300°C (approx. 600°F).
7. Primary Applications
- Aerospaziale:Landing gear bushings, sleeve bearings, and actuator components.
- Marine Engineering:Propeller shafts, pump internal components, and marine fasteners.
- Industriale:High-load bushings, valve stems, heavy-duty gears, and wear plates.
- Oil & Gas:Drill collars and blowout preventer (BOP) parts.