What are the commonly used corrosion-resistant stainless steels?

In our factory, 316L is the material most commonly used for corrosion resistance, along with titanium. For pipes that need to resist sulfuric acid corrosion, steel-reinforced plastic pipes are used; for applications subject to strong acetic acid corrosion, zirconium is employed

304 is a general-purpose stainless steel that is widely used in manufacturing equipment and components that require good overall properties (corrosion resistance and formability). 301 stainless steel exhibits significant work hardening upon deformation, and is used in various applications that require high strength. 302 stainless steel is essentially a variant of 304 stainless steel with a higher carbon content; cold rolling can be used to impart greater strength to it. 302B is a stainless steel with a high silicon content, and it possesses excellent resistance to high-temperature oxidation. 303 and 303Se are free-cutting stainless steels containing sulfur and selenium respectively, used in applications where free-cutting properties and high surface finish are primarily required. 303Se stainless steel is also used to manufacture components that require hot heading, as it exhibits good hot workability under such conditions. 304L is a variant of 304 stainless steel with a lower carbon content, used in applications that require welding. The lower carbon content minimizes the precipitation of carbides in the heat-affected zone near the weld, and the precipitation of carbides can cause intergranular corrosion (weld erosion) in stainless steel under certain conditions. 304N is a nitrogen-containing stainless steel; nitrogen is added to enhance the strength of the steel. Stainless steels 305 and 384 contain higher levels of nickel, have a low rate of work hardening, and are suitable for various applications that require good cold formability. 308 stainless steel is used to make welding electrodes. Stainless steels 309, 310, 314, and 330 have relatively high nickel and chromium contents, which is intended to improve the steel’s oxidation resistance and creep strength at high temperatures. 30S5 and 310S are variants of 309 and 310 stainless steels; the only difference is their lower carbon content, which is intended to minimize the formation of carbides in the area near the weld. Stainless steel 330 possesses particularly high resistance to carburization and thermal shock. Stainless steels 316 and 317 contain aluminum, which gives them significantly better resistance to pitting corrosion in marine and chemical industry environments compared to stainless steel 304. Among them, type 316 stainless steel has variants including low-carbon stainless steel 316L, high-strength nitrogen-containing stainless steel 316N, and free-cutting stainless steel 316F with a higher sulfur content. 321, 347, and 348 are titanium-based, niobium-tantalum-based, and niobium-stabilized stainless steels, respectively, suitable as welded components for use at high temperatures. 348 is a stainless steel suitable for the nuclear power industry, with certain restrictions on the combined content of tantalum and tungsten.