ASTM B366 UNS N08810 Incoloy 800H Nickel Alloy Steel 180° Elbow B16.9 for Pipe System
ASTM B366 is a standard developed by the American Society for Testing and Materials (ASTM), covering welded fittings made of materials such as nickel alloys, nickel cobalt alloys, nickel chromium alloys, and nickel iron chromium alloys. N08810 is a nickel iron chromium alloy, also known as Incoloy 800H. This alloy can maintain good mechanical properties at high temperatures, while forming a dense oxide film to prevent further oxidation, and has excellent corrosion resistance to various corrosive media such as acid, alkali, salt, etc.
N08810 belongs to nickel based alloys, whose main components include various key elements such as nickel, chromium, and iron. Among them, the nickel content is usually ≥ 30%, the chromium content is between 19% and 23%, and iron is the remaining component. In addition, it also contains small amounts of elements such as carbon, aluminum, titanium, manganese, silicon, copper, sulfur, etc.
N08810 Chemical Composition
| UNS GRA. | CHEMICAL COMPOSITION % Maximum |
| MN | CR | IR | MN | CU | SI | AL | TI |
| N08810 | 30.0-35.0 | 19.0-23.0 | 39.5 | 1.5 | 0.75 | 1.0 | 0.15-0.60 | 0.15-0.60 |
During the processing, N08810 alloy material can undergo various forming operations such as bending, stamping, etc. In terms of heat treatment, the annealing heat treatment of 800H and 800HT alloys (i.e. N08810) is generally carried out between 1147-1177 ℃ to strengthen the grains and change their creep resistance and stress fracture properties. The cooling method is usually rapid cooling with water to ensure that the material has good corrosion resistance.
N08810 Heat Treatment
| UNS GRA. | Heat TreatmentA,B DEG °F [°C] | |
| N08810 | | |
Application:
- Petrochemical industry: In the petrochemical industry, N08810 elbows are used in key parts such as heating furnace tubes, heat exchanger tubes, and pipeline systems in refining and chemical plants. In these applications, the elbow needs to withstand high temperature, high pressure, and corrosive media erosion, and the N08810 elbow, with its excellent corrosion resistance and high temperature strength, can meet these demanding working conditions.
- Aerospace: In the aerospace field, N08810 elbows are used to manufacture connections and steering for high-temperature components, such as connecting pipes for engine turbine blades, combustion chambers, and other components. These components need to operate under extremely high temperature and pressure conditions, as well as withstand complex mechanical and vibration loads. The high temperature strength and stability of the N08810 elbow make it an ideal choice for these applications.
- Electric power industry: In power plants, N08810 elbows are used in key areas such as high-temperature flue gas treatment equipment and boiler components. These devices also need to withstand high temperatures and corrosive media erosion, and the corrosion resistance and high temperature performance of the N08810 elbow enable it to meet these requirements.
- Chemical industry: In the chemical industry, N08810 elbow is used to manufacture connecting pipelines for equipment such as chemical reactors and high-temperature stackers. These devices need to withstand the erosion of corrosive media and high temperature conditions, and the corrosion resistance of N08810 elbow makes it an ideal material for chemical equipment manufacturing.
- Marine engineering: In key facilities such as offshore platforms and subsea pipelines, the N08810 elbow is used to resist highly corrosive seawater environments. The marine environment is highly corrosive to metal materials, and the corrosion resistance of N08810 elbow makes it the preferred material in marine engineering.
- Manufacturing of other high-temperature equipment: N08810 elbows are also widely used in other equipment that requires high temperature and corrosion resistance, such as cooling systems for nuclear reactors, exhaust gas purification equipment, etc.
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ASTM B366 UNS N08810 Incoloy 800H Nickel Alloy Steel 180° Elbow B16.9 for Pipe System Images
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