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
BS HR10 Rod and Bar
BS HR 206 Plate, Sheet, Strip
BS HR 404 Seamless Tube
AECMA PrEn 2199 Bar
AECMA PrEn 2200 Forgings
AECMA PrEn 2201 Bar
AECMA PrEn 2202 Tube
AECMA PrEn 2203 Sheet, Strip
AECMA PrEn 2418 Plate
DIN 17750 Plate, Sheet, Strip
DIN 17751 Pipe and Tube
DIN 17752 Bar and Rod
DIN 17753 Wire
DIN 17754 Forgings
AMS 5872 Sheet, Plate and Strip
AMS 5886 Bar, Forgings, Rings
AFNOR NCK 20 D
AIR 9165 Sheet, Plate, Rod, Bar and Forgings
MSRR 7035
MSRR 7036
GE B50A774A
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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