ASTM B163 N08810 Alloy Steel Tube Heat Exchanger Tube

ASTM B163 N08810 Alloy Steel Tube Heat Exchanger Tube

ASTM B163 is a standard from the American Society for Testing and Materials (ASTM) entitled "Seamless Tubes for Condensers and Heat Exchangers of Nickel and Nickel Alloys." This standard specifies the dimensions, mechanical properties, and chemical composition requirements for seamless nickel alloy tubes used in condensers, evaporators, heat exchangers, and other heat transfer systems. N08810 is a specific alloy material covered by this standard; it belongs to the austenitic nickel-iron-chromium alloy family. Its more widely known commercial name is INCOLOY 800H (where "H" stands for High temperature).

N08810 is widely used because it possesses a series of performance advantages. N08810 has excellent high-temperature strength, exhibiting higher creep resistance and endurance at high temperatures (typically above 600°C). Simultaneously, N08810 has excellent corrosion resistance, resisting oxidation and carburization, and is resistant to corrosion from various media. It also exhibits good stability and excellent machinability and weldability.

ASTM B163 N08810 Alloy Steel Heat Exchanger Tube Chemical Composition

Comparison of ASTM B163 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 B163 N08810 Alloy Steel Tube Heat Exchanger Tube Application

• Petrochemical and Chemical Processing: Ethylene cracking furnace tubes, converter tubes, radiant tubes, heat exchangers; equipment for handling high-temperature, high-pressure hydrogen.

• Energy and Power Industry: High-temperature superheaters and reheaters for supercritical and ultra-supercritical power plants; heat exchange components for waste incinerators.

• Heat Treatment and Industrial Furnaces: Muffle furnaces, radiant tubes, furnace rollers, guide rails, annealing furnace shrouds, etc.

• Other Industries: Digesters and heaters for the pulp and paper industry; equipment used in specific chemical media environments such as nitric acid and nitrates.