Nimonic 263, also known as Alloy 263, UNS N07263, and W. Nr. 2.4650, is a precipitation-hardening creep-resisting nickel-chromium-cobalt-molybdenum alloy. It is recognized for its high strength at elevated temperatures, excellent corrosion resistance, and good fabricability. Nimonic 263 is supplied in the high-temperature annealed condition and is recommended for service temperatures up to 850 °C (1,560 °F). It is commonly used in gas turbine components, such as turbine discs, shafts, and fasteners, as well as in other high-temperature applications in the aerospace and power generation industries.
Whatsapp:
+8615900526263E-mail:
sales@cocessalloys.comChemical Composition
|
Carbon (C) |
0.04-0.08 % |
|
Silicon (Si) |
0.40 % max. |
|
Manganese (Mn) |
0.60 % max. |
|
Sulfur (S) |
0.007 % max. |
|
Silver (Ag) |
0.0005 % max. |
|
Aluminum (Al) |
0.60 % max. |
|
Boron (B) |
0.005 % max. |
|
Bismuth (Bi) |
0.0001 % max. |
|
Cobalt (Co) |
19.0-21.0 % |
|
Chromium (Cr) |
19.0-21.0 % |
|
Copper (Cu) |
0.20 % max. |
|
Iron (Fe) |
0.7 % max. |
|
Molybdenum (Mo) |
5.6-6.1 % |
|
Lead (Pb) |
0.0020 % max. |
|
Titanium (Ti) |
1.9-2.4 % |
|
Aluminum and titanium (Al+Ti) |
2.4-2.8 % |
|
Nickel (Ni) |
Balance |
Physical Properties
|
Density, |
g/cm3 |
8.36 |
|
|
lb/in3 |
0.302 |
|
Melting Range |
|
|
|
Liquidus temperature |
°C |
1355 |
|
Solidus temperature |
°C |
1300 |
|
Specific Heat, J/kg, |
°C |
461 |
Mechanical Properties
|
Temperature |
Yield Strength 0.2 % (MPa) |
Tensile Strength (MPa) |
Elongation (%) |
|
RT |
585 |
1004 |
45 |
Nimonic 263, also known as Alloy 263, is utilized in various high-temperature applications due to its exceptional properties. Some common applications of Nimonic 263 include:
1. Gas Turbine Components: Nimonic 263 is used in the manufacturing of critical components for gas turbine engines, including turbine discs, shafts, and fasteners, where high-temperature strength and corrosion resistance are essential.
2. Aerospace Industry: It finds applications in aircraft engine components, particularly in areas where high-temperature performance and corrosion resistance are crucial.
3. Power Generation: Nimonic 263 is employed in power generation applications, such as in components for gas and steam turbines, where it provides high-temperature strength and oxidation resistance.
4. Industrial Furnace Applications: It is utilized in the construction of industrial furnaces, where it offers excellent high-temperature strength and resistance to oxidation and corrosion.
5. High-Temperature Fasteners: Nimonic 263 is used for high-temperature bolting and fastening applications in industries such as aerospace, power generation, and petrochemical processing.
Specifications for Nimonic 263 include the following:
|
Sheet, Plate & Strip |
Biller, Rod & Bar |
Bare Welding Rods & Wire |
Forgings |
|
AMS 5872 |
AMS 5886 |
AMS 5966 |
AMS 5886 |
Standard product forms of Nimonic 263 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at sales@cocessalloys.com for full information.
