Incoloy 800 (N08800) is widely used in the petrochemical industry for various applications due to its excellent resistance to high-temperature corrosion and oxidation. Here are some common applications of Incoloy 800 in the petrochemical industry:
1. Heat Exchangers and Condensers: Incoloy 800 is extensively used in the construction of heat exchangers and condensers in petrochemical processing plants. These components come into contact with corrosive fluids at high temperatures, and Incoloy 800’s resistance to oxidation and corrosion makes it suitable for withstanding such harsh environments.
2. Tubing and Piping Systems: Incoloy 800 is utilized for tubing and piping systems in petrochemical plants where resistance to high-temperature corrosion and thermal stability are crucial. It is commonly employed in applications involving hydrocarbon processing, such as cracking units, reforming units, and ethylene production.
3. Catalyst Tubes: In petrochemical refining processes, catalyst tubes are employed to catalyze chemical reactions and facilitate the conversion of feedstocks. Incoloy 800’s high-temperature strength and resistance to carburization and oxidation make it a suitable material for catalyst tubes in applications like catalytic reforming, hydroprocessing, and steam methane reforming.
4. Furnace Components: Incoloy 800 is used for furnace components in the petrochemical industry due to its ability to withstand high temperatures and resist oxidation. It is employed for tubes, radiant coils, muffles, and heating elements in various thermal processing units, including cracking furnaces and reformers.
5. Sulfuric Acid Alkylation Units: Incoloy 800 is employed in sulfuric acid alkylation units where it comes into contact with highly corrosive sulfuric acid at elevated temperatures. Its corrosion resistance to sulfuric acid, coupled with its high-temperature strength, makes it suitable for applications involving acid regeneration and acid coolers.
6. Flue Gas Desulfurization (FGD) Systems: FGD systems are used to remove sulfur dioxide (SO2) from flue gases produced by combustion processes. Incoloy 800 is utilized in FGD systems to construct components such as absorber vessels, ductwork, and mist eliminators, where it offers resistance to sulfuric acid and other corrosive gases.
7. Hydrogen Production: Incoloy 800 is employed in various hydrogen production processes, including steam methane reforming (SMR) and coal gasification. Its high-temperature strength and resistance to carburization and oxidation make it suitable for components exposed to high-temperature hydrogen-rich environments.
These are just a few examples of the applications of Incoloy 800 in the petrochemical industry. The specific application and selection of Incoloy 800 will depend on factors such as the corrosive environment, temperature, pressure, and overall process requirements. It is recommended to consult with materials and engineering experts to determine the suitability of Incoloy 800 for a particular petrochemical application.
N08800 is the material designation for a nickel-iron-chromium alloy known as Incoloy 800. It is a solid solution-strengthened alloy with excellent resistance to oxidation, carburization, and high-temperature corrosion.
Here are some key features and properties of Incoloy 800 (N08800):
Chemical Composition:
– Nickel (Ni): 30.0-35.0%
– Chromium (Cr): 19.0-23.0%
– Iron (Fe): 39.5% min
– Carbon (C): 0.1% max
– Aluminum (Al): 0.15-0.60%
– Titanium (Ti): 0.15-0.60%
– Sulfur (S): 0.015% max
– Manganese (Mn): 1.5% max
– Silicon (Si): 1.0% max
– Copper (Cu): 0.75% max
Key Features and Properties:
– High Temperature Resistance: Incoloy 800 can withstand high temperatures up to 1100°C (2010°F) and maintains its mechanical properties in elevated temperature environments.
– Oxidation and Corrosion Resistance: It exhibits excellent resistance to oxidation, carburization, and nitridation in high-temperature environments. It also has good resistance to sulfur-containing atmospheres and many corrosive media, including acids and alkalis.
– Thermal Stability: Incoloy 800 has good thermal stability, which means it retains its mechanical properties even after long exposure to high temperatures.
– Strength and Ductility: It offers a combination of high strength and good ductility, making it suitable for applications where both mechanical strength and formability are required.
– Weldability: Incoloy 800 can be readily welded using various techniques, including gas tungsten arc welding (GTAW/TIG), shielded metal arc welding (SMAW), and resistance welding.
– Non-Magnetic: It is non-magnetic in nature, which is beneficial in certain applications.
Applications:
– Heat Exchangers: Incoloy 800 is commonly used in heat exchangers for petrochemical and chemical processing industries, where it resists high-temperature corrosion and provides good thermal conductivity.
– Power Generation: It is used in power plants for components such as steam superheater tubing, boiler tubes, and other high-temperature applications.
– Furnace Equipment: Incoloy 800 is employed in furnace components like radiant tubes, muffles, and heating elements due to its high-temperature strength and resistance to oxidation.
– Petrochemical Industry: It finds applications in various petrochemical processes, including ethylene cracking, where it withstands corrosive environments at high temperatures.
– Industrial Furnaces: Incoloy 800 is used in industrial furnaces for heat treating and annealing equipment.
– Aerospace: It may be utilized in aircraft components and gas turbine engines that operate at high temperatures.
Incoloy 800 (N08800) is available in various forms, including sheets, plates, bars, pipes, tubes, and fittings, to cater to different application requirements. It is important to consult the manufacturer’s specifications and data sheets for precise composition and detailed mechanical properties of specific Incoloy 800 products.
