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A Complete Guide to Inconel 825 Foil

A Complete Guide to Inconel 825 Foil

Inconel 825 is a material that is widely used in many industrial applications due to its excellent corrosion resistance and high-temperature strength. It is a nickel-based superalloy that contains significant amounts of chromium, molybdenum, and copper, which makes it an excellent choice for applications that require resistance to both reducing and oxidizing acids. In this article, we’ll take a closer look at Inconel 825 foil, one of the most popular forms of this material, and provide you with a complete guide.

What is Inconel 825 Foil?

Inconel 825 Foil is a corrosion and heat-resistant alloy that combines nickel, chromium, iron, molybdenum and copper. It provides excellent resistance to reducing and oxidizing environments and localized corrosive media such as acids or bases. The alloy also resists stress corrosion cracking caused by chlorides and other halogen ions.

Inconel 825 Foil has a high tensile strength of up to 1380 MPa (200 ksi), excellent formability, weldability and machinability. Its superior properties make it suitable for a variety of industrial applications such as chemical processing equipment, condensers or heat exchangers in chemical processes, fuel cells, turbines, pollution control systems, nuclear reactors, aerospace components, whirlpools for hydrothermal treatments of minerals or fats/oils; cooling equipment for coastal structures subject to acetylene attack such marine driven rods in offshore production platforms exposed to hydrogen sulfide environments.

What You Need to Know About Inconel 825 Foil?

Properties of Inconel 825 Foil

Inconel 825 foil has excellent mechanical properties, with a tensile strength of 140ksi. It is also highly resistant to corrosion and can withstand exposure to various aggressive chemicals, including sulfuric and phosphoric acids. Inconel 825 foil has excellent thermal stability and is highly resistant to thermal cycling. It has good weldability and ductility, making it suitable for various fabrication methods.

Applications of Inconel 825 Foil

Inconel 825 foil is used in various applications, including chemical processing, oil and gas industries, and marine applications. It is also used in heat exchangers, pressure vessels, and piping systems exposed to aggressive chemicals. Inconel 825 foil is highly resistant to seawater and is used in constructing offshore platforms and desalination plants. Inconel 825 foil is also used in exhaust systems for diesel generators and acidic flue gas desulfurization systems.

Fabrication of Inconel 825 Foil

Inconel 825 foil is fabricated using various techniques, including rolling, annealing, and drawing. It is essential to control the processing temperature to minimize the potential for thermal cracking and reduce the risk of deformation. Inconel 825 foil can be easily welded using conventional techniques, but it is important to use a welding process with very low heat input to minimize the risk of heat-affected zone cracking.

Maintenance and Care of Inconel 825 Foil

To maintain the excellent properties of Inconel 825 foil, it is important to avoid exposure to high temperatures for long periods and to protect the material from exposure to corrosive substances. Protective coatings, such as ceramic coatings, can help extend the life of Inconel 825 foil. Using appropriate cleaning and maintenance procedures is also important to maintain the material’s corrosion resistance properties.


Inconel 825 foil is an excellent material choice for applications requiring high-temperature and corrosion resistance. Its excellent mechanical properties and stability in high-temperature environments make it a popular choice for many industrial applications. This complete guide to Inconel 825 foil has given you a better understanding of this material, its properties, applications, fabrication, and maintenance. With this knowledge, you can make an informed decision with confidence.

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