Incoloy 800 Tube – Properties, Characteristics, and Applications

Incoloy 800 is a nickel-chromium-iron alloy which is also known as Alloy 800. The alloy has excellent resistance to oxidation, carburization, and nitridation, making it a popular material in applications that involve high temperatures and corrosive environments. Incoloy 800 tube, in particular, is a widely used product in various industries due to its strength, reliability, and resistance to corrosion. In this blog post, we will provide an overview of the properties, characteristics, and applications of the Incoloy 800 tube.

What is Incoloy 800 Tube?

Incoloy 800 Tube is a nickel-chromium alloy that contains substantial amounts of iron, chromium, and nickel. It’s an ideal solution for high-temperature applications due to its excellent resistance to carburization, oxidation, and nitriding atmospheres. With a nominal composition of 36% Ni, 21% Cr and 0.7% C, this material provides superior corrosion resistance in many media, including up to 10% sulfuric acid environments. Combining these elements gives it good strength properties over a wide range of temperatures from cryogenic up to 1125°F (593°C). In addition, Incoloy 800 Tubing also exhibits good creep and rupture strength. This makes it ideally suited for the petrochemical and nuclear industries and other industrial applications such as heat exchangers, condensers, evaporators etc.

Properties of Incoloy 800 Tube:

The Incoloy 800 tube has high structural strength and can withstand temperatures up to 1100°C. It offers excellent resistance to oxidation, carburization, and nitridation, which makes it a popular choice for high-temperature applications. Moreover, Incoloy 800 tubing has an excellent resistance to corrosion, both in acidic and alkaline environments. This property makes it ideal for use in chemical and petrochemical industries. Incoloy 800 tube is a nickel-iron-chromium alloy that combines excellent tensile strength, creep rupture strength, and corrosion resistance in oxidizing and reducing atmospheres. It has good formability, weldability and traceability characteristics. The alloy is especially suitable for high-temperature environments because of its outstanding mechanical properties and excellent resistance to carburization and oxidation at elevated temperatures up to 1150°C (2102°F). Its outstanding features include high ductility, good fabricability and long-term service life even when exposed to corrosive environments such as sulphuric acid or phosphoric acid solutions. In addition, Incoloy 800 possesses great stability under gradual thermal cycling in extreme conditions of temperatures ranging from -200°C (-328°F) all the way up to 1000°C (1832 °F).

Characteristics of Incoloy 800 Tube:

Incoloy 800 tube has excellent mechanical properties, including high tensile strength and good ductility. It also possesses low thermal expansion characteristics, ensuring it can retain its shape and form over a wide range of temperatures. Moreover, Incoloy 800 exhibits high weldability, allowing easy joining with other materials through conventional welding. It is a nickel-iron-chromium alloy comprising approximately 36% nickel, 22% chromium, and 0.05 to 0.10% titanium. It has good strength and excellent resistance to oxidation and carburization in high-temperature environments up to 1150°C (2102°F). Its composition also provides excellent resistance to stress corrosion cracking and inorganic acids like nitric acid solutions. Incoloy 800 tubing can harden through cold working but cannot be heat treated. It is ideal for chemical process equipment requiring superior corrosion resistance at elevated temperatures. It finds common applications in superheaters, condensers, steam piping systems, evaporators, distillation columns, and hot water tanks.

Applications of Incoloy 800 Tube:

Incoloy 800 is used extensively across various industries, including chemical processing, petrochemical, power generation, and oil and gas. The alloy’s high strength and excellent resistance to oxidation and corrosion make it an ideal material for heat exchangers, furnace components, and a range of high-temperature applications. Incoloy tube is also used in nuclear power plants as it has low radioactivity and excellent corrosion resistance.


Incoloy 800 tube has several advantages over other materials used in high-temperature and corrosive applications. These include its excellent resistance to oxidation, corrosion, carburization, and nitridation. Its high strength, and good ductility allow it to withstand extreme temperatures and pressures. Moreover, Incoloy tube is highly weldable, and its low thermal expansion characteristics ensure dimensional stability over a wide range of temperatures.


Incoloy 800 tube is a reliable, strong, and corrosion-resistant material that is widely used across various industries. Its unique properties make it ideal for high-temperature and corrosive environments where other materials may fail. If you require a material that can withstand extreme temperatures and harsh chemical environments, consider using Incoloy 800 in your next project. Finally, it’s always crucial to consider your specific application and seek professional advice to identify the best material for your needs.