NAI-LOK 6MO UNS S31254 Seamless Pipes for Offshore Desalination & Chemical Processing

6 Mo (UNS S31254) is a high-alloy stainless steel with elevated levels of nickel, molybdenum, and chromium, 

making it especially suitable for use in harsh corrosive environments. 6 Mo stainless steel offers excellent 

resistance to corrosion and is widely used in industries such as marine, chemical, oil, and natural gas. 

It has exceptional resistance to chloride stress corrosion cracking (SCC) and also exhibits good high-temperature 

oxidation resistance, making it suitable for extreme environments.

Chemical Composition:The key alloying elements in UNS S31254 include:

• Chromium (Cr):19-21%

• Nickel (Ni):18-20%

• Molybdenum (Mo):6-7%

• Iron (Fe):Balance

• Copper (Cu):≤0.5%

• Nitrogen (N):≤0.2%

• Manganese (Mn):≤2%

• Silicon (Si):≤1%

• Phosphorus (P):≤0.045%

• Sulfur (S):≤0.03%