What is Inconel 625 Pipe?

Inconel 625 is an austenitic grade of steel. These pipes are designed with a superior composition of nickel, chromium, and molybdenum allowing the pipes to transport fluids and gases in corrosive and oxidative media. The alloy 625 pipes can be used in temperatures up to 1800 degrees F and are highly resistant to attacks in mild or alkaline conditions. The pipes work well in marine environments, where they are susceptible to pitting and crevice corrosion. The Inconel grade 625 pipes have good strength and showcase superior mechanical properties. These components have a minimum tensile strength of 940mpa with a minimum yield strength of 430mpa and can be elongated by 51.5%. Designed with a hardness between 32 to 40 HRC, the alloy 625 pipe is difficult to machine and process.

What is Inconel 625 tube used for?
The Inconel 625 tube is a versatile grade that is employed in the transportation of fluids or gases and is commonly seen in.

• Jet engine components
• Pollution control systems
• Heat exchanger items
• Marine services
• Nuclear power plants and reactor cores
• Oil and gas refining and processing industry
• Electrical cable connectors for communication services

How do I know if my Alloy 625 Tube is seamless?
A seamless tube is produced by passing hot steel billets through an extrusion process and doesn’t show the presence of welds on the surface of the tube. These tubes are generally designed in sizes up to only 24 inches.

Which testings are required for Inconel 625 Seamless Pipe and why?
Inconel 625 pipe testing procedures are important in the detection of any weakness and predicting the quality of the material. The pipes are generally put through three non-destructive tests.

• Ultrasonic testing- This test helps in detecting defects in the dimensions and help in determining the length of the grade.
• Magnetic flux leakage testing- This is a non-destructive test where the material is tested on the ferromagnetic changes. Any leakage in the module is measured based on the magnetic flux in large caliber seamless material.
• Eddy current testing- The process is based around the theory of electromagnetic agent that is designed without a coupling agent. It helps in the detection of bulbs and can be used in measuring seamless pipes of different configurations.

What is ASTM B444 UNS N06625?
ASTM B444 UNS N06625 is a standard specification of nickel, columbium, chromium, and molybdenum alloys. These components are designed in annealed and solution annealed conditions as per their grades. The items in this grade are subjected to tensile, yield, and elongation testing procedures to ensure that they work in different conditions. These alloys are ductile and can be easily electroplated or welded in place.

Inconel Alloy 625 Round Pipe Chemical Composition

ISO 6207 Inconel 625 Pipe Mechanical Properties

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Alloy 625 Seamless Pipe Equivalent