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 %)
| 요소 | Inconel C263 | 하스텔로이 C276 |
|---|---|---|
| 니켈 | 균형 | 균형 |
| 크롬 | 19-21 | 14.5-16.5 |
| 몰리브덴 | 5.6-6.1 | 15-17 |
| 코발트 | 19-21 | 최대 2.5 |
| 텅스텐 | – | 3-4.5 |
| 철 | 0.7 max | 4-7 |
| 티탄 | 1.9-2.4 | – |
| 알류미늄 | 0.3-0.6 | – |
Mechanical Properties (typical)
| 재산 | Inconel C263 | 하스텔로이 C276 |
|---|---|---|
| 인장 강도(MPa) | 850-1050 | 690-930 |
| 항복강도(MPa) | 550-680 | 280-360 |
| 신장률(%) | 25-40 | 50-60 |
| 경도(브리넬) | 220-270 | 190-230 |
Temperature Performance
| 측면 | Inconel C263 | 하스텔로이 C276 |
|---|---|---|
| Max Service Temp (°C) | 850 | 1100 |
| Oxidation Resistance | 훌륭한 | 매우 좋은 |
내식성
| 환경 | Inconel C263 | 하스텔로이 C276 |
|---|---|---|
| Oxidizing | 훌륭한 | 훌륭한 |
| Reducing | 좋은 | 훌륭한 |
| Pitting/Crevice | 매우 좋은 | 훌륭한 |
주요 특징들
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
일반적인 응용 분야
Inconel C263:
- Gas turbine components (combustion cans, transition ducts)
- High-temperature fasteners
- 열 차폐
- Exhaust systems
Hastelloy C276:
- Chemical processing equipment
- Flue gas desulfurization systems
- Offshore oil and gas components
- Nuclear waste treatment facilities
용접성
| 측면 | Inconel C263 | 하스텔로이 C276 |
|---|---|---|
| 용접성 | 좋은 | 훌륭한 |
| 용접 후 열처리 | 필수의 | Not typically required |