ASME SB165 UNS N04400 Monel 400 Nickel Alloy Pipe 66Ni/34Cu Seamless Pipe

Comparison Table: Monel 400 vs. Common Alternatives

 
 
This is the main reason for choosing Monel 400 over stainless steels or carbon steels.

• Excellent in Seawater and Marine Environments: It has outstanding resistance to saltwater and seawater-induced corrosion, including pitting and crevice corrosion. 

• Resistance to Acid and Alkaline Solutions: It performs well in a wide range of conditions, particularly against:

  • Hydrofluoric Acid: Monel 400 is one of the few metals that can handle hydrofluoric acid, especially in the absence of air.

  • Sulfuric and Hydrochloric Acids: It offers good resistance, especially under reducing conditions.

  • Alkalis: It is highly resistant to alkaline solutions, including strong caustic soda (sodium hydroxide).

• Neutral Salt Solutions: It resists corrosion from most neutral salts.