Common Questions about Inconel 600/601/625 Pipes/Tubes

What are the main differences between Inconel 600, 601, and 625?
- Inconel 600 is primarily nickel-chromium with good oxidation resistance. Inconel 601 has added titanium for improved oxidation resistance at high temperatures, while Inconel 625 contains molybdenum for enhanced corrosion resistance.
What applications are these alloys used for?
- Inconel 600 is used in heat exchangers and chemical processing. Inconel 601 is found in furnace applications and gas turbines. Inconel 625 is ideal for marine and chemical industries due to its superior corrosion resistance.
How do these alloys perform in high temperatures?
- All three alloys perform well at high temperatures, with Inconel 601 providing the best oxidation resistance, making it suitable for continuous high-temperature service.
What is the corrosion resistance of these alloys?
- Inconel 600 has good resistance to many corrosive environments. Inconel 601 offers improved resistance to oxidation, while Inconel 625 excels in both reducing and oxidizing environments.
Are these alloys weldable?
- Yes, all three alloys can be welded using various methods. Inconel 625 is particularly noted for its excellent weldability.
What are the common forms available?
- Inconel 600, 601, and 625 are commonly available as pipes, tubes, sheets, and bars.
How do the costs compare?
- In general, Inconel 625 is the most expensive due to its complex composition, followed by Inconel 601 and then Inconel 600.