Inconel 625 is a popular nickel-based superalloy primarily used in high-temperature and highly corrosive environments. The alloy is known for its excellent strength, durability, and resistance to corrosion. One of the most common industrial applications of Inconel 625 is in manufacturing pipes used in chemical-processing plants and oil and gas refineries. This blog post will provide a comprehensive guide on Inconel 625 pipes, discussing their composition, physical and mechanical properties, uses, heat treatment, and more.
Inconel 625 Pipes Composition:
Alloy 625 pipes comprise nickel, chromium, and molybdenum. The alloy also contains small traces of other elements, such as niobium, tantalum, iron, and cobalt. These elements work together to provide excellent strength and durability to the pipes, especially when exposed to high-temperature and highly corrosive environments. The alloy’s high nickel content also makes it resistant to oxidization and reduction, essential in applications where corrosion is a major concern.
| Grade | C | Mn | Si | Fe | S | Cr2 | Al-Ti | Ni | |
| 625 | min. | – | – | – | – | – | 20.0 | – | 58.0 |
| max. | 0.10 | 0.50 | 0.50 | 5.0 | 0.015 | 23.0 | 0.40 | – | |
Inconel 625 Pipes Physical Properties:
Inconel 625 welded pipes have a density of 8.44 grams per cubic centimetre, making them lightweight and easy to handle during installations. The pipes have a melting point of 1290 degrees Celsius, making them ideal for high-temperature environments. Moreover, they have a coefficient of thermal expansion of 13.3 µm/m°C, which means they can withstand changes in temperature without cracking or becoming brittle.
Inconel 625 Pipes Mechanical Properties:
Din 2.4856 Welded Pipe have excellent mechanical properties, including high tensile strength, good elongation, and superior fatigue strength. They can withstand high-pressure and high-temperature applications without deforming or fracturing. Moreover, the pipes are easy to bend, weld, and fabricate, making them suitable for various industrial applications.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 625 | Psi – 1,35,000 , MPa -930 | Psi – 75,000 , MPa – 517 | 42.5 | – | – |
Inconel 625 Pipes Equivalent
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Inconel 625 | 2.4856 | N06625 | NCF 625 | NA 21 | ХН75МБТЮ | NC22DNB4MNiCr22Mo9Nb | NiCr23Fe |
Inconel 625 Pipes Uses:
Inconel 625 pipes are commonly used in chemical-processing plants, oil and gas refineries and other industries that require pipes that can withstand highly corrosive and high-temperature environments. They are also used in nuclear power plants, aerospace, marine, and aircraft industries. Inconel 625 pipes are preferred over other materials because of their excellent strength, durability, and resistance to corrosion.
Inconel 625 Pipes Heat Treatment:
ASTM B444 UNS N06625 ERW Pipe are heat-treated to improve strength and hardness. The most common heat treatment method used for Inconel 625 pipes is annealing, which involves heating the pipes to a specific temperature and cooling them slowly. The annealing process helps reduce the pipes’ internal stresses and enhance their flexibility, making them easier to bend and weld.
Inconel 625 Pipes Corrosion Resistance:
Inconel Din 2.4856 Welded Pipe are highly corrosion-resistant, ideal for highly corrosive environments. They can withstand harsh chemicals, acids, and salts without degrading or corroding. This is essential for industries such as oil and gas refineries, where the pipes are exposed to highly corrosive and harsh environments.
Conclusion:
Inconel 625 Seamless Pipe are a popular choice for industries that require pipes that can withstand high-temperature and highly corrosive environments. The alloy’s excellent strength, durability, and resistance to corrosion make it an ideal material for use in chemical processing plants, oil and gas refineries, and other industries. The pipes have excellent mechanical properties, including high tensile strength, good elongation, and superior fatigue strength. Additionally, the pipes can be heat-treated to improve their strength and flexibility, making them easier to bend and weld. Overall, Inconel 625 pipes are a reliable, long-lasting solution for industrial piping applications in harsh environments.
Meet Bhavesh, a seasoned blogger with a wealth of knowledge and experience. From metal products manufacturing to retail, Bhavesh has a diverse background in various industries and is dedicated to sharing his insights and expertise with readers.
