About Alloy
Haynes 263 alloy (UNS N07263) is a nickel-based superalloy developed by Haynes International, known for its exceptional high-temperature strength, excellent creep and fatigue resistance, and good oxidation and corrosion resistance.
The chemical composition of Haynes 263 typically includes around 20% chromium, 20% cobalt, 6% molybdenum, 0.6% aluminum, and small amounts of other elements like iron, manganese, and silicon. This unique blend of elements gives the alloy its impressive mechanical and metallurgical properties.
Haynes 263 exhibits high tensile and yield strengths, even at elevated temperatures. It maintains its strength and ductility up to around 1800°F (982°C), making it suitable for use in high-temperature applications. The alloy also demonstrates excellent creep resistance, allowing it to withstand long-term exposure to high stresses and temperatures without deformation.
One of the key features of Haynes 263 is its resistance to oxidation and hot corrosion. The protective oxide layer that forms on the alloy's surface helps it withstand harsh, high-temperature environments, such as those found in gas turbine engines and industrial furnaces.
Due to these properties, Haynes 263 finds widespread use in the aerospace, power generation, and chemical processing industries. In the aerospace sector, it is employed in components like turbine blades, vanes, and combustion chambers, where its high-temperature strength and oxidation resistance are critical. In power generation, the alloy is used in steam turbine parts and boiler equipment. It also sees application in the petrochemical industry, particularly in reactors, heat exchangers, and other process equipment operating at elevated temperatures.
Haynes 263's exceptional combination of mechanical properties, thermal stability, and corrosion resistance make it a valuable material for applications where reliable performance under extreme conditions is essential. Its versatility and suitability for high-temperature environments have contributed to its widespread adoption in various industries.
Product Form
UNS N07263
Werkstoff Nr. 2.4650
● Rod and Bar: BS HR10
● Plate, Sheet, Strip:BS HR 206
● Seamless Tube: BS HR 404
● Bar: AECMA PrEn 2199
● Forging: AECMA PrEn 2200
● Bar: AECMA PrEn 2201
● Tube:AECMA PrEn 2202
● Sheet, Strip: AECMA PrEn 2203
● Plate: AECMA PrEn 2418
● Plate, Sheet, Strip: DIN 17750
● Pipe and Tube: DIN 17751
● Bar and Rod: DIN 17752
● Wire: DIN 17753
● Forgings: DIN 17754
● Sheet, Plate and Strip:AMS 5872
● Bar, Forgings, Rings:AMS 5886
● Sheet, Plate, Rod, Bar and Forgings:AIR 9165
Chemical Composition
| Element | Content (%) |
| Nickel, Ni | 52 |
| Chromium, Cr | 20 |
| Cobalt, Co | 20 |
| Molybdenum, Mo | 6 |
| Titanium, Ti | 2.4 |
| Iron, Fe | 0.7 |
| Aluminum, Al | 0.6 |
| Manganese, Mn | 0.6 |
| Silicon, Si | 0.4 |
| Copper, Cu | 0.2 |
| Carbon, C | 0.06 |
Property
| Properties | Metric | Imperial |
| Tensile strength | 1050 MPa | 152.3 ksi |
| Yield strength | 635 MPa | 91.9 ksi |
| Elastic modulus | 221 GPa | 32.1 psi |
| Elongation at break | 35.70% | 35.70% |
Application
Haynes C263 is used in the following application areas:
● Gas turbine hot section components such as medium temperature combustors
● Aircraft turbine engine components
● Land-based turbine components
● Low temperature combustors
● Transition liners
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