Views: 0 Author: Site Editor Publish Time: 2024-10-28 Origin: Site
The difference between austenitic stainless steel and other stainless steels: Austenitic stainless steel is popular for its unique properties, which include corrosion resistance, high temperature stability, high strength, weldability and non-hardening.
History of austenitic stainless steel: The history of austenitic stainless steel can be traced back to the early 19th century, initially by the French metallurgist Pierre Bertier discovered its acid resistance, and later in the early 20th century by the British Harry Brearley accidentally discovered its acid resistance and rust resistance.
Face-centered cubic structure (FCC) : The face-centered cubic crystal structure of austenitic stainless steel is its basic feature, which is different from the body-centered cubic (BCC) structure of ferritic stainless steel.
Work hardening: Austenitic stainless steel cannot be hardened by heat treatment, but it can be improved by cold working to improve hardness and mechanical strength.
Low temperature and high temperature resistance: Austenitic stainless steel can be used in low to high temperature environments due to its ductility, toughness and mechanical strength over a wide temperature range.
Stress corrosion cracking (SCC) : Although austenitic stainless steel has general corrosion resistance, it can be damaged by stress corrosion cracking in corrosive environments.
Non-magnetic: Austenitic stainless steel is non-magnetic and suitable for built environments where strong magnetic fields need to be avoided, such as MRI scanners in medical centers.
The role of molybdenum and niobium: Molybdenum is added to austenitic stainless steel to improve resistance to pitting corrosion, while niobium is added as a stabilizer to reduce the possibility of intergranular corrosion.
Weldability of low carbon austenitic stainless steel: The use of low carbon austenitic stainless steel minimizes the formation of chromium carbides during welding, thereby reducing the risk of local corrosion.
Super austenitic stainless steel: Super austenitic stainless steel contains high molybdenum, high nickel, high chromium and high nitrogen to ensure greater corrosion resistance in highly corrosive environments.
Extensive application of austenitic stainless steel: Austenitic stainless steel is widely used in food production, corrosive fluid storage, high-pressure pipelines and pressure vessels, kitchenware, construction and transportation industries.
Conclusion: Austenitic stainless steel is widely used for its high corrosion resistance and durability, and despite its higher cost, the nickel content requirements can be minimized by adding manganese, nitrogen and copper.
