S31700

S31700 refers to a specific grade of stainless steel, commonly known as Stainless Steel 317L. This designation is part of the American Iron and Steel Institute (AISI) numbering system. It is a low-carbon austenitic stainless steel alloy characterized by its enhanced corrosion resistance compared to conventional 304 and 316 grades. The "L" in 317L signifies its low carbon content, which helps prevent sensitization during welding and subsequent corrosion.

The key alloying elements in S31700 include chromium, nickel, and molybdenum. The higher molybdenum content, typically around 3-4%, is a significant factor in its improved resistance to pitting and crevice corrosion, particularly in aggressive environments containing chlorides and acids. This makes it suitable for applications where exposure to corrosive substances is a concern.

S31700 finds application in a variety of industries, including chemical processing, petrochemicals, pulp and paper manufacturing, and pollution control equipment. It is often used for fabricating heat exchangers, piping systems, tanks, and other components that require durability and resistance to corrosive media. Its austenitic structure provides good toughness and ductility, allowing for fabrication processes like forming and welding. The material exhibits good mechanical properties at both ambient and elevated temperatures.