Monel400 is the largest and most versatile corrosion-resistant alloy with excellent overall performance. The alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas media， and excellent corrosion resistance to hot concentrated alkaline solutions. It is also resistant to corrosion by neutral solutions， water， seawater， atmosphere， organic compounds， etc. An important feature of this alloy is that it generally does not produce stress corrosion cracking and has good cutting properties.

The chemical composition of Monel 400 alloy consists mainly of 30% copper and 65% nickel plus a small amount of iron (1-2%). Due to the different chemical compositions， it can be available in a variety of alloy grades， but there is no significant difference in corrosion resistance between them. monel400 alloy is more resistant to corrosion by reducing media than pure nickel and more resistant to corrosion by oxidizing media than pure copper.

Characteristic of ASTM B165 MONEL400

1. Seamless connection: Monel 400 seamless steel pipe is made of seamless process， with continuous and smooth wall， which can effectively reduce the resistance loss of medium in the pipeline and improve the conveying efficiency.

2. High quality material: Monel 400 seamless steel pipe is made of high quality material， with high mechanical properties and corrosion resistance， which can meet various demanding application scenarios.

3. Long service life: As the Monel 400 seamless steel pipe has good corrosion resistance and mechanical properties， its service life is longer than ordinary steel pipe， which can save a lot of maintenance and replacement costs for enterprises.

4. Easy installation: Monel 400 seamless steel pipe is easy and quick to install， and it can be connected by traditional welding， flange connection， etc.， which can effectively shorten the project cycle.

5. Wide range of application areas: Monel 400 seamless steel pipe is widely used in petroleum， chemical industry， electric power， shipping， aerospace and other fields.