ASTM B165 Monel 400 Seamless Nickel Alloy Marine Pipe

ASTM B165 Monel 400 seamless nickel alloy marine pipe

 

ASTM B165 Monel 400 seamless nickel alloy marine pipe

ASTM B165 specifies cold-finished seamless tubing made from Monel 400 (UNS N04400). Monel 400 tubing is a nickel-copper alloy highly regarded in marine applications for its excellent resistance to seawater, steam, and saline solutions. Monel 400 alloy tubing offers excellent mechanical properties, especially at elevated and subzero temperatures. Combined with excellent corrosion resistance and good weldability, it's an ideal choice for shipbuilding, propeller shafts, and other marine equipment.

What's the difference between Hastelloy C276 and Monel 400?

The difference is that Monel 400's corrosion resistance comes from its copper content, while Hastelloy C-276's corrosion resistance comes from its chromium and molybdenum content. Both copper and chromium are antioxidants. However, copper's antioxidant properties break down at high temperatures.

 

Monel 400 seamless nickel alloy marine pipe Chemical Composition

Monel 400 Pipe Schedule and Wall Thickness

Monel 400 UNS N04400 Pipe Pressure Rating

Key Features of ASTM B165 Monel 400 Pipe
Alloy Composition: Nickel-copper alloy (approximately 67% nickel, 23% copper), offering excellent corrosion resistance in a wide range of environments.
Seamless Design: Manufactured without welding, the pipe provides excellent structural integrity and leak-proof performance.
Corrosion Resistance: Demonstrates strong corrosion resistance even in fast-moving seawater and brackish water, and resists stress corrosion cracking in most freshwater conditions.
Mechanical Properties: High strength and good mechanical properties, maintaining good performance even in sub-zero temperatures.
Temperature Range: Suitable for applications up to 1000°F (538°C).
Weldability: Excellent weldability, critical for the fabrication of complex marine structures.

Applications in Marine and Other Industries
Marine Engineering: Due to its excellent resistance to seawater corrosion, it is widely used in marine applications, including propeller shafts, ship hulls, and general marine equipment.
Chemical and Hydrocarbon Processing: Its resistance to a wide range of corrosive substances makes it suitable for chemical processing equipment, valves, and heat exchangers. High-Pressure Systems: The alloy's strength and corrosion resistance make it suitable for high-pressure piping and components.
Nuclear Industry: Due to its radiation and corrosion resistance, it is used in nuclear reactors and fuel handling equipment.

 

About Gnee Steel

Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.