Inconel C263 and Hastelloy C276 are both high-performance nickel-based superalloys, each with unique properties that make them valuable in different industrial applications. This comparison highlights the key differences between these two alloys, including their chemical composition, mechanical properties, temperature performance, and typical uses. Understanding these distinctions is crucial for engineers and designers when selecting materials for specific projects, particularly those involving high temperatures or corrosive environments. Let’s examine these alloys in detail:
Chemical Composition (nominal, weight %)
| nach Extrusionsabschrecken und künstlicher Alterung HBS≥80 | Inconel C263 | Hastelloy C276 |
|---|---|---|
| Nickel | Balance | Balance |
| nach Extrusionsabschrecken und künstlicher Alterung HBS≥80 | 19-21 | 14,5-16,5 |
| Molybdän | 5.6-6.1 | 15-17 |
| Kobalt | 19-21 | 2,5 max |
| Tungsten | – | 3-4.5 |
| nach Extrusionsabschrecken und künstlicher Alterung HBS≥80 | 0.7 max | 4-7 |
| nach Extrusionsabschrecken und künstlicher Alterung HBS≥80 | 1.9-2.4 | – |
| Aluminium | 0.3-0.6 | – |
Mechanical Properties (typical)
| Eigentum | Inconel C263 | Hastelloy C276 |
|---|---|---|
| Zugfestigkeit (MPa) | 850-1050 | 690-930 |
| Streckgrenze (MPa) | 550-680 | 280-360 |
| Dehnung (%) | 25-40 | 50-60 |
| Härte (Brinell) | 220-270 | 190-230 |
Temperature Performance
| Aspekt | Inconel C263 | Hastelloy C276 |
|---|---|---|
| Max Service Temp (°C) | 850 | 1100 |
| Oxidation Resistance | Exzellent | Sehr gut |
Korrosionsbeständigkeit
| Umfeld | Inconel C263 | Hastelloy C276 |
|---|---|---|
| Oxidizing | Exzellent | Exzellent |
| Reducing | Gut | Exzellent |
| Pitting/Crevice | Sehr gut | Exzellent |
Hauptmerkmale
Inconel C263:
- High strength at elevated temperatures
- Good oxidation resistance
- Excellent creep resistance
- Used in gas turbine components, exhaust systems
Hastelloy C276:
- Exceptional corrosion resistance in a wide range of environments
- Excellent resistance to pitting and stress corrosion cracking
- Good fabricability and weldability
- Used in chemical processing, pollution control, pulp and paper production
Typische Anwendungen
Inconel C263:
- Gas turbine components (combustion cans, transition ducts)
- High-temperature fasteners
- Heat shields
- Exhaust systems
Hastelloy C276:
- Ausrüstung für die chemische Verarbeitung
- Rauchgasentschwefelungsanlagen
- Offshore-Öl- und Gaskomponenten
- Nuclear waste treatment facilities
Schweißbarkeit
| Aspekt | Inconel C263 | Hastelloy C276 |
|---|---|---|
| Schweißbarkeit | Gut | Exzellent |
| Post-weld Heat Treatment | Erforderlich | Not typically required |