ASTM B444 / ASME SB444 UNS N06625 / DIN 2.4856 / INCONEL 625 NICKEL ALLOY U BEND TUBE

Overview:

The tube is primarily composed of Inconel 625, an alloy consisting of approximately 58% nickel, 20-23% chromium, 8-10% molybdenum, and small amounts of niobium, iron, and other elements. This composition provides superior resistance to a wide range of corrosive environments, including seawater, acids, alkalis, and high-temperature oxidizing and reducing environments.

The U-bend design allows the tube to smoothly change direction, resembling the shape of the letter "U." This configuration allows for compact installations and efficient heat transfer in heat exchangers, condensers, and other equipment requiring directional changes in fluid or gas flow.

Inconel 625 U-bend tubes exhibit excellent mechanical strength and stability at high temperatures. They can withstand temperatures up to 1093°C (2000°F) without significant loss of strength, making them suitable for applications in industries such as aerospace, chemical processing, and power generation.

Inconel 625 offers exceptional resistance to corrosion, including pitting, crevice corrosion, and intergranular attack. It performs well in various harsh environments, including seawater, acidic and alkaline solutions, and environments containing sulfur compounds. As a result, the Inconel 625 U-bend tube is widely used in offshore and marine applications, chemical processing plants, and oil and gas industries.

Specification:

Chemical Composition:

Mechanical Properties:

Applications:

1. Heat Exchangers: Inconel 625 U-bend tubes are extensively used in heat exchangers for efficient heat transfer in processes involving high temperatures and corrosive media. They provide excellent resistance to corrosion and maintain their mechanical strength, making them suitable for demanding heat exchange applications in chemical processing, petrochemical, and power generation industries.

2. Oil and Gas Industry: Inconel 625 U-bend tubes are utilized in offshore and onshore oil and gas applications due to their remarkable corrosion resistance in environments containing chloride, hydrogen sulfide, and other corrosive compounds. They are employed in oil and gas production, refining, and processing equipment such as separators, condensers, and heat exchangers.

3. Aerospace Industry: Inconel 625 U-bend tubes find use in the aerospace sector for applications requiring high-temperature strength, corrosion resistance, and durability. They are utilized in aircraft hydraulic systems, engine components, and exhaust systems, where they can endure extreme heat and resist the corrosive effects of combustion byproducts.

4. Chemical Processing: Inconel 625 U-bend tubes are well-suited for chemical processing plants that handle corrosive chemicals and acids. They are employed in reactors, distillation columns, and other equipment where resistance to aggressive environments is crucial. The tubes offer protection against localized corrosion and are resistant to chloride-induced stress corrosion cracking.

5. Power Generation: Inconel 625 U-bend tubes find application in power plants, particularly in boilers and heat exchangers. They can withstand high-temperature steam environments, resist scaling and oxidation, and provide reliable performance in corrosive conditions, contributing to efficient energy generation.

6. Marine and Offshore: Inconel 625 U-bend tubes are used in marine and offshore applications due to their resistance to seawater corrosion, including pitting and crevice corrosion. They are employed in seawater desalination plants, offshore oil rigs, and vessels where durability and longevity are critical, such as cooling systems and pipelines.

7. Chemical and Petrochemical Industry: Inconel 625 U-bend tubes are widely utilized in the chemical and petrochemical sectors, where they resist corrosive chemicals, acidic environments, and elevated temperatures. They find application in reaction vessels, acid storage tanks, and other equipment requiring excellent corrosion resistance and high-temperature capabilities.