ASTM B564 UNS N04400 / Monel 400 Weld Neck Flange ASME B16.5 WNRF Flange

ASTM B 564 UNS N04400 / Monel 400 WNRF Flange Nickel Alloy Weld Neck Flange

Monel 400 is a nickel-copper alloy known for its exceptional corrosion resistance. When it comes to Monel 400 flanges, they are typically used in industries like chemical processing, marine, oil and gas, and other areas where high strength and resistance to corrosion and erosion are critical.

Monel 400 flanges are available in various types such as slip-on, weld neck, blind, threaded, and socket weld flanges, allowing for flexibility in design based on the specific needs of the installation.

Equivalent Material of ASTM B564 UNS N04400 Nickel Alloy Flange

Chemical Properties of ASTM B564 UNS N04400 Nickel Alloy Flange

Mechanical Characteristics of ASTM B564 UNS N04400 Nickel Alloy Flange

ASTM B564 UNS N04400 Nickel Alloy Flange

Welding and Fabrication

Welding Monel 400 is a bit challenging because the material tends to form brittle structures when improperly handled. The key challenges include:

• Avoiding stress corrosion cracking: Monel 400 is susceptible to stress corrosion cracking (SCC) in the presence of certain conditions, especially if exposed to elevated temperatures and a corrosive environment.
• Welding filler material: It's critical to use the correct welding filler material (often Monel 60 or Monel 400 filler) to maintain the integrity of the alloy's properties. Preheating may be necessary in some cases.
• Post-weld heat treatment: In some cases, post-weld heat treatment (PWHT) may be required to relieve internal stresses and ensure the welded joint is strong and resistant to cracking.

Penetration Test

Application