There are many grades of stainless steel, 300 series stainless steel is the most famous and commonly used, especially 304, 316, etc..

301: Good ductility, used for molded products. It can also be quickly hardened by mechanical processing and has good weldability. Abrasion resistance and fatigue strength are better than 304 stainless steel. 301 stainless steel exhibits obvious work hardening during deformation, and is used in various occasions requiring higher strength

302: In essence, it is a variant of 304 stainless steel with higher carbon content, which can be made to obtain higher strength through cold rolling.

302B: is a kind of stainless steel with high silicon content, which has high resistance to high temperature oxidation.

303 and 303Se are free-cutting stainless steels containing sulfur and selenium respectively, which are used in occasions where free cutting and high surface gloss are required. 303Se stainless steel is also used to make parts that require hot upsetting, because under such conditions, this stainless steel has good hot workability.

304N: is a nitrogen-containing stainless steel. Nitrogen is added to increase the strength of the steel.

305 and 384: Stainless steel contains high nickel, and its work hardening rate is low. It is suitable for various occasions that require high cold formability.

308: This kind of 300 series stainless steel used to make electrodes.

309, 310, 314 and 330 stainless steels have relatively high nickel and chromium content in order to improve the oxidation resistance and creep strength of the steel at high temperatures. While 30S5 and 310S are variants of 309 and 310 stainless steel, the difference is that the carbon content is lower in order to minimize the carbides precipitated near the weld. 330 stainless steel has a particularly high resistance to carburization and thermal shock resistance.

Posted by Stainless steel pipe fittings supplier, kaysuns.