Austenitic stainless steel

Austenitic stainless steel: Stainless steel that has an austenitic structure at room temperature. When steel contains about 18% Cr, 8%~10% Ni, and about 0.1% C, it has a stable austenitic structure. Austenitic chromium-nickel stainless steels include the well-known 18Cr-8Ni steel, as well as high Cr-Ni series steels that were developed by increasing the contents of Cr and Ni and adding elements such as Mo, Cu, Si, Nb, and Ti. Austenitic stainless steel is non-magnetic and possesses high toughness and plasticity, but it has low strength; it cannot be strengthened through phase transformation and can only be strengthened through cold working. When elements such as S, Ca, Se, and Te are added, it exhibits good machinability. In addition to resisting corrosion in oxidizing acidic media, such steels can also withstand corrosion by sulfuric acid, phosphoric acid, as well as formic acid, acetic acid, urea, etc., if they contain elements such as Mo and Cu. If the carbon content in such steels is below 0.03% or if they contain Ti and Ni, their resistance to intergranular corrosion can be significantly improved. Austenitic stainless steels with high silicon content exhibit good corrosion resistance in concentrated nitric acid. Due to their comprehensive and excellent overall properties, austenitic stainless steels are widely used in various industries. Austenitic steel (1) 1Cr17Mn6Ni15N ； (2)1Cr18Mn8Ni5N ； (3)1Cr18Ni9 ； (4)1Cr18Ni9Si3 ； (5)0Cr18Ni9 ； (6)00Cr19Ni10 ； (7)0Cr19Ni9N ； (8)0Cr19Ni10NbN ； (9)00Cr18Ni10N ； (10)1Cr18Ni12 ； (11) 0Cr23Ni13 ； (12)0Cr25Ni20 ； (13) 0Cr17Ni12Mo2 ； (14) 00Cr17Ni14Mo2 ； (15) 0Cr17Ni12Mo2N ； (16) 00Cr17Ni13Mo2N ； (17) 1Cr18Ni12Mo2Ti ； (18) 0Cr18Ni12Mo2Ti ； (19) 1Cr18Ni12Mo3Ti ； (20) 0Cr18Ni12Mo3Ti ； (21) 0Cr18Ni12Mo2Cu2 ； (22) 00Cr18Ni14Mo2Cu2 ； (23) 0Cr19Ni13Mo3 ； (24) 00Cr19Ni13Mo3 ； (25) 0Cr18Ni16Mo5 ； (26) 1Cr18Ni9Ti ； (27) 0Cr18Ni10Ti ； (28) 0Cr18Ni11Nb ； (29) 0Cr18Ni13Si4, 304, 316 are foreign grade designations