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Understanding Incoloy 800 Pipes: Applications and Benefits

Views: 5 Author: Wang Publish Time: 2024-08-30 Origin: Site

What is Incoloy 800 material?

Incoloy 800 is a nickel-chromium iron alloy which is typically used in high-temperature service applications where resistance is required from the effects of high-temperature corrosion such as oxidation and carburization. This Nickel-Iron-Chromium alloy has good strength and excellent resistance to oxidation and carburisation in high temperature atmospheres. Incoloy 800 also resists corrosion in many aqueous environments, and has been used in some steam generation plants due to its resistance to stress cracking.

Incoloy 800 offers excellent resistance to high-temperature oxidation and carburization, making it suitable for use in heat exchangers, heaters, and piping systems in the chemical and petrochemical industries. Incoloy 800 featuring optimized carbon content and grain size for improved creep rupture strength at elevated temperatures. This makes it ideal for use in high-temperature furnace tubing, heaters, and critical components in nuclear power plants.

Alloy 800 is a widely used material of construction for equipment that must resist corrosion, have high strength or resist oxidation, carburization, and other harmful effects of high-temperature exposure. The Chromium in the alloy imparts resistance to oxidation and corrosion. The high Nickel content maintains an austenitic structure so that the alloy is ductile. The Nickel also contributes resistance to scaling, general corrosion, and stress corrosion cracking. The iron content provides resistance to internal oxidation.

Incoloy 800 alloy maintains a stable austenitic structure during prolonged exposure to high temperatures since it doesn’t form the embrittling sigma phase after long time exposure at 1200°F [649°C]. It’s mainly used for petrochemical process piping, heat exchangers, carburizing equipment, heating element sheathing, and nuclear steam generator tubing. Supply forms include: plates, bars, pipes, forgings, welding materials, flanges, etc., which can be processed according to drawings.

ASTM B407 UNS N08800 Incoloy 800 Welded Pipe supplier

A benefit of using Incoloy 800 is its stability at elevated temperatures. This nickel-iron-chromium alloy can maintain its austenitic microstructure despite the Incoloy 800 Pipe being exposed to elevated temperatures. According to specification ASTM B407, these pipes are annealed for 15 minutes at a temperature of 1800°F. After annealing, the Alloy 800 Seamless Pipe is cooled in air. The alloy has superior resistance to Carburization. It is a phenomenon that occurs in processing based industries where gas mixtures contain hydrocarbons or Carbon monoxide come in contact with any steel. Carburization generally weakens many regular steel grade and affects their ability to resist both oxidation and sulfidation, due to the depletion of chromium in the matrix and the formation of carbides on the surface of the pipe.

With huge stresses like these, regular steel pipes are bound to crack. Welded Pipe Incoloy 800 make for a cheaper alternative to seamless type, though their strength is slightly lesser than the latter. The ASME SB 407 UNS N08800 is required to be subject to tests such as either the hydrostatic or nondestructive eddy-current tests, to detect consequential discontinuities, for example - a drilled hole or a transverse tangential notch. The use of these tests on the ASTM B407 UNS N08800 also aids in determining the permissible fiber stress. Mechanical properties of the Werkstoff number 1.4876 Pipe like - yield and tensile strength, elongation in addition to the grain size must conform to the requirements of the specification.

As typical of most nickel-chromium alloys, Incoloy 800 has excellent mechanical properties and their corrosion resistance properties surpass many stainless steel alloys. Incoloy 800 Tube manufacturers produce these components keeping in accordance with ASTM B407. Per this specification, the tubes are practical for use in heat exchangers as well as for condensers. The main function of a condenser in an industry is to condense a gas by conversion of its gaseous state into a liquid one. Condensation is a process that takes place through cooling. Components like a steel pipe, when exposed to very high heat, are prone to getting carburised.

However, the use of ASTM B407 UNS N08800 as a part of condensation or heat exchangers can be justified, because the alloy can withstand elevated temperature settings. At high temperature and pressure, conventional steel alloys are subject to failure. Which means regular alloys face severe loss of mechanical properties including toughness, ductility, and resistance to cracking, leading to an eventual decay by intergranular corrosion.

But, that is not the case with W. Nr. 1.4876 Tubes. The high content of nickel present in the Alloy 800 Tube makes it resilient to becoming brittle due to the precipitation of sigma phase. Along with nickel, its heat resistance properties make the Incoloy 800 Seamless Tube a unique addition to industries like steam power plants or in chemical processing plants for example - distilleries, even if they are slightly more expensive than a welded type. Though the cost for an Incoloy 800 Welded Tube is relatively cheaper, the strength and pressure bearing capacity of a seamless type is much higher. The application of seamless tubes is specifically targeted to those industries that process highly corrosive or flammable compounds, as using this type of Incoloy 800 Tubing ensures safety.

Din 1.4876 Incoloy 800 Seamless Pipe Specification

Alloy 800 Pipe Specification	ASTM B407/ASME SB407
Incoloy Alloy 800 Pipe Finish	Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
Our Presence	USA, Canada, Australia, UK, Malaysia, Poland, Iran, Italy, Singapore, UAE
Incoloy 800 Welded Pipe size	5.0 mm – 1219.2 mm
Alloy 800 EFW Pipe size	5.0 mm – 1219.2 mm
Specialized in	Large Diameter Alloy 800 Pipe
Incoloy 800 Pipe Form	Hollow, Square, Round, Rectangular , Straight Pipes, Hydraulic Etc.
Alloy 800 Pipe End	Plain End, Beveled End, Treaded.
Incoloy 800 Pipe Length	Single Random, Double Random & Cut Length.
Alloy 800 Seamless Pipe size	4 to 219mm W. T.: 0.5 to 20mm
Marking	All Incoloy Alloy 800 Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Incoloy 800 Pipe Schedule	SCH5, SCH10, SCH40, STD, SCH80, SCH160

Applications of Incoloy 800 Pipe

Chemical Processing

Incoloy 800 Pipe is frequently used in the petrochemical industry due to its ability to withstand high temperatures and resist corrosion from chemicals and sulfur compounds. Incoloy 800 pipes are used in the chemical processing industry due to their excellent corrosion resistance properties. The pipes can withstand harsh chemical environments such as acid, alkali, and chloride ion corrosion. Incoloy 800 pipes are commonly used in the production of polyester resins, epoxy resins, caustic soda, and other chemicals used in the chemical processing industry. The pipes also contain nickel-iron-chromium alloy material, further enhancing their resistance to oxidation from high temperatures, making them ideal for any application involving chemical processing at extreme temperatures.

Heat Exchangers

Incoloy 800 pipe is widely used in the petrochemical industry for heat exchangers due to its excellent oxidation, corrosion resistance and ability to withstand high temperatures. Heat exchangers are essential equipment in the petrochemical industry. They are used to transfer heat from one fluid to another. Incoloy 800 pipes are perfect for manufacturing heat exchangers due to their thermal stability and resistance to oxidation. These pipes can operate under high temperatures, making them suitable for producing heat exchangers that handle harsh liquids and gases. Its nickel-iron-chromium alloy composition gives it superior toughness and strength compared to other stainless steels, making it ideal for demanding processes such as those encountered in the petrochemical industry. Additionally, its ductility makes it easy to form into complex shapes required by a heat exchanger design, maximizing efficiency.

Oil Refineries

Incoloy 800 Pipes have extensive applications in the petrochemical industry, especially in oil refineries. Oil refineries are crucial for processing crude oil and converting it into various end products such as gasoline, diesel, and lubricants. The pipes used in these refineries must withstand high temperatures and pressures, corrosive environments, and hydrogen attacks. Incoloy 800 pipes are excellent for oil refineries due to their excellent resistance to corrosion and oxidation, making them ideal for reactors and tubes. It also offers higher temperatures than other alloys with a higher creep strength for increased durability in this challenging industrial environment.

Power Generation

Incoloy 800 pipes can be applied in the power generation industry for various tasks due to their resistance to corrosion and creep deformation. Petrochemical plants are significant power consumers, and generators have become essential equipment to ensure that the plants run efficiently. It is often used for heat exchangers, condensers, evaporator tubes, and piping systems, as it withstands extreme temperatures and pressures while maintaining its strength and resilience. Incoloy 800 pipes are widely used in power generation equipment due to their high-temperature strength and corrosion resistance properties. They are perfect for use in power boilers, steam generators, and exhaust systems. The pipe’s high chromium content also enables wear resistance to prevent erosion damage in both industrial steam turbine systems and nuclear reactors.

Marine Applications

Incoloy 800 pipe has become a preferred choice for petrochemical and marine applications due to its impressive combination of corrosion resistance, strength, ductility and heat tolerance. Incoloy 800 pipes are used to construct offshore rigs, pipelines, and platforms. It has good general corrosion resistance in many acidic media, particularly sulfuric acid; it is also resistant to localized attacks such as pitting and crevice corrosion from chloride-bearing solutions. The pipes are ideal for use in marine environments due to their corrosion resistance and strength properties. The pipes’ properties make them ideal for use in seawater handling applications, such as seawater cooling systems. In addition, its creep rupture strength is usually twice that of carbon steel pipes, making it ideal for both downhole and topside offshore hydrocarbon production activities.

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