Incoloy 800 Tube: Properties, Characteristics, and Applications

Incoloy 800 is a widely used superalloy known for its high-temperature strength, corrosion resistance, and excellent thermal stability. In aerospace, chemical processing, and petrochemical industries, Incoloy 800 tubes are used for their reliability, durability, and resistance to oxidation and scaling. In this blog, we will explore the properties, characteristics, and applications of Incoloy 800 tubes in detail.

What is Incoloy 800 Tube?

Incoloy 800 Tube is a Nickel-Iron-Chromium alloy tube developed by the Special Metals Corporation. It is an ideal material for high-temperature applications, as it has excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures. Due to its good corrosion resistance and strength retention in extreme environments, Incoloy 800 Tube can be used in chemical processing equipment such as heat exchangers and condensers under highly corrosive conditions. Furthermore, they are also used for petrochemical parts like flanges, valves, fittings and expansion joints, and piping systems operating at temperatures up to 1150°C (2100°F). Additionally, it demonstrates good tensile properties even when exposed over extended periods with moderate stress levels.

Properties of Incoloy 800 Tube

Incoloy 800 tube is a nickel-iron-chromium alloy with excellent corrosion resistance, particularly in high-temperature environments. It has good strength, holds up to elevated temperatures, and is resistant to oxidation and carburization. Incoloy 800 tube has excellent creep-rupture properties at both low and high temperatures. In addition, it is readily formable in welded forms without the need for preheating, making it an ideal material for a wide variety of applications such as heat exchangers, condensers, steam generators and chemical process equipment. Its increased levels of chromium enhance resistance to stress corrosion cracking compared with other grades of stainless steel tubes.

Characteristics of Incoloy 800 Tube

Incoloy 800 tube is a nickel-iron-chromium alloy with excellent oxidation, sulfidation and carburization resistance. It has high strength and good corrosion resistance in high and low-temperature environments. The alloy can also be used in harsh applications such as acidic chloride and alkaline salt solutions, making it the perfect choice for heat exchangers, condensers, evaporators, combustion chambers, thimbles, etc. Its advantages include great hot workability when annealed; superior stress rupture properties; excellent creep-rupture strength; capability of achieving temperatures up to 1260°C (2300°F); no embrittlement after welding or thermal shock; outstanding formability at room temperature & very good weldability.

Applications of Incoloy 800 Tube

Incoloy 800 Tube is a nickel-iron-chromium alloy with excellent high-temperature corrosion resistance. It has excellent thermal stability and retains strength even after long exposure to elevated temperatures. Its primary applications include heat exchangers, condensers, storage tanks, and piping systems in oil refineries, nuclear power plants, chemical processing plants, industrial furnaces and more. Its superior creep and stress rupture properties make it an ideal choice for high-temperature components operating under pressure, such as valves or structural components. It is also often selected due to its excellent resistance to sulfur compounds at high temperatures, making it an essential material for pipeline networks transporting acidic liquids or gases. Furthermore, the continuous use at 1200°F (649°C) provides a major advantage over austenitic steels when utilized in welded structures with similar grain size control requirements.

Advantages of using Incoloy 800 Tubes

Incoloy 800 tubes have several distinct advantages that make them ideal for various industries. These include excellent corrosion resistance to aqueous and high-temperature environments, good formability and weldability, and great strength and toughness even in high temperatures. They are also resistant to oxidation, carburization, nitriding, and sulfidation. Incoloy 800 tubes exhibit superior creep-rupture properties at elevated temperatures up to 1500°F (816°C). This makes them perfect for furnace components, heat exchangers, and other parts operating at elevated temperatures.


In conclusion, Incoloy 800 tubes are an excellent choice for high-temperature applications due to their superior properties and characteristics. They offer excellent resistance to corrosion, oxidation, and scaling, and they have good mechanical strength and thermal stability. They are widely used in aerospace, chemical processing, and petrochemical industries for manufacturing furnace components, heat exchangers, and other high-temperature equipment. Their durability, reliability, and performance have made them popular among engineers, designers, and manufacturers worldwide.