Nimonic 263

┃Material

Nimonic® 263,UNS N07263, Alloy 263, W.Nr. 2.4650

Note that the designation “Nimonic®” is registered trademarks of Special Metals Corporation group of companies.

┃ Overview

UNS N07263 is a nickel-based superalloy known for its exceptional strength, high-temperature resistance, and excellent corrosion resistance. Developed for applications requiring high strength and oxidation resistance at elevated temperatures, Nimonic 263 offers a combination of mechanical properties and thermal stability. Also, the alloy exhibits good weldability, allowing for the fabrication and joining of components using various welding processes.

┃ Chemical Composition (%)

┃ Mechanical Property

┃ Application

Power Generation: Turbine blades, exhaust nozzles, and other components that are exposed to high temperatures, pressure, and corrosive environments

Aerospace Industry: Turbine blades, combustion chambers, and afterburner components

Industrial Furnaces: Particularly in aerospace and heat treatment applications

Petrochemical Industry: Heat exchangers, furnace components, gas turbine combustion systems, and other equipment that require resistance to oxidation and high-temperature corrosion

Chemical Processing: Reactor vessels, valves, and other components that require exceptional resistance to corrosion and high-temperature environments

Automotive Industry: Exhaust valves and turbochargers

┃Corrosion Resistance

Nimonic 263 exhibits excellent corrosion resistance, making it suitable for use in environments with high-temperature oxidation and corrosion challenges. The alloy's nickel, chromium, and molybdenum content contribute to its resistance to a wide range of corrosive media, including gases, chemicals, and high-temperature atmospheres. Alloy 263 forms a protective oxide layer on its surface, which helps prevent further oxidation and degradation.

┃Machining

The high strength and work-hardening tendency of Nimonic 263 make it more difficult to machine compared to standard materials. It has a tendency to work harden during machining, which can lead to increased cutting forces, tool wear, and surface roughness. Therefore, Machining Alloy 263 requires the use of appropriate cutting tools, techniques, and cutting parameters to achieve satisfactory results. In addition, the high temperature resistance of Alloy 263 requires the use of cutting fluids or coolants during machining to dissipate heat effectively and prevent thermal damage to the workpiece and cutting tools.

┃Welding

Nimonic 263 is readily welded. TIG processes, MIG processes, resistance spot, stitch, seam welding, high-temperature brazing, electron-beam welding, plasma-arc welding and many other joining process are available for Alloy 263, but the choice of any one will depend on the application and the equipment available. For example, flash-butt welding is used for the manufacture of gas turbine rings, but finds little application elsewhere.

┃ Product Forms

Ø Bar & Rod

Ø Plate & Sheet

Ø Coil & Strip

Ø Pipe & Tube

Ø Fitting: Flange, Tee, Elbow, Reducer etc.

Ø Forging: Ring, Shaft, Circle, Block etc.

┃ Note

Ronsco is a supplier with more than 27 years of experience in the stainless steel and nickel alloy field, we always adheres to the business phiosophy of "customer-centered", tries its best to meet the requirements of customers and pursues win-win cooperation with customers. Are you looking for metal products one-stop supplier! Contact Us Now! Email: service@ronsteel.com