Heat Exchanger Tube Alloy Steel Tube ASTM B407 UNS N08810

Heat Exchanger Tube Alloy Steel Tube ASTM B407 UNS N08810

ASTM B407 N08810 alloy steel seamless heat exchanger tube is a high-performance nickel based alloy tube that complies with ASTM B407 standard specifications. It is mainly composed of elements such as nickel (Ni), iron (Fe), and chromium (Cr), with a relatively high content of nickel, which endows it with excellent corrosion resistance and high-temperature oxidation resistance. In addition, carbon (C), manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), aluminum (Al), titanium (Ti) and other elements are added to the alloy to further improve its mechanical and processing properties.

ASTM B407 N08810 alloy steel seamless tube exhibits good corrosion resistance in various corrosive media, including reducing and oxidizing media; This alloy has excellent high-temperature stability and can maintain the stability of its mechanical and physical properties in high-temperature environments; The B407 N08810 alloy steel seamless tube has high yield strength and tensile strength, and can withstand significant pressure and load; This alloy is easy to process and shape, suitable for various cold and hot working processes.

ASTM B407 N08810 Alloy Steel Heat Exchanger Tube Chemical Composition

Comparison of ASTM B407 N08810 Nickel Alloy with other Materials

• VS N08800: For operating temperatures below 600°C, the difference between N08810 and N08800 is minimal. However, above 650°C, especially in high-temperature environments subject to mechanical stress, N08810's creep resistance becomes crucial. N08800, however, lacks high-carbon control and heat treatment, resulting in lower high-temperature strength.
• VS N06600: N06600 alloy has a higher nickel content and offers superior resistance to alkaline corrosion and chloride-ion stress corrosion cracking, but its high-temperature strength and carburization resistance are generally lower than N08810.
• VS N08825: N08825 alloy contains molybdenum and copper. It was designed to withstand complex wet corrosion environments such as sulfuric acid, phosphoric acid, and chloride-containing solutions, but its high-temperature strength is significantly lower than that of N08810.

ASTM B407 N08810 Alloy Steel Seamless Heat Exchanger Tube Preparation and Processing

Preparation process: melting, casting, heat treatment (such as annealing, generally carried out between 1120~1170 ℃ to strengthen the grain and change its creep resistance and stress fracture performance), cold processing, etc.

Processing precautions: During the cold rolling process, careful operation is necessary to avoid serious damage to the outer surface of the pipe; After cold rolling, it needs to go through processes such as acid washing and polishing to remove oxide scale and defects

ASTM B407 N08810 Alloy Steel Tube Heat Exchanger Tube Application

• Petrochemical Industry: High-temperature pipelines for ethylene cracking furnaces, reforming units, and converters.

• Energy & Power: Nuclear power steam generator tubes, boiler superheaters, and gas turbine components.

• Industrial Heating: Radiant tubes, muffle tanks, and thermocouple sheaths.

• Environmental Protection Equipment: Waste heat recovery systems and flue gas desulfurization devices.