Austenitic stainless steel 300 series
Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. When the steel contains about 18% Cr, 8%~10% Ni, and about 0.1% C, it has a stable austenite structure.Austenitic 300 series stainless steels are complex-nickel austenitic stainless steels.Austenitic chromium-nickel stainless steel includes the well-known 18Cr-8Ni steel and high Cr-Ni series steel developed on this basis by increasing the content of Cr and Ni and adding Mo, Cu, Si, Nb, Ti and other elements.
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Model 301: Good ductility, for molding products. It can also be hardened by mechanical processing. Welding is good. Abrasion and fatigue strength is better than 304 stainless steel, products such as: spring, steel structure, wheel cover.
Model 303: By adding a small amount of sulfur and phosphorus, it is easier to cut and process than 304.
Model 304: General model; that is, 18/8 stainless steel. Products such as: corrosion containers, tableware, furniture, railing, medical equipment, some mobile phone frames. The standard component is 18 % chromium and 8 % nickel. Stainless steels that are not magnetic and cannot be changed by heat treatment methods to change their gold -phase tissue structure.
Model 304L: The same characteristics as 304, but low -carbon is more resistant to corrosion and easy to treat, but poor mechanical properties are suitable for welding and not easy to treat products.
Model 304N: The same feature as 304 is a kind of stainless steel containing nitrogen, which is to increase the strength of steel.
Model 309: It has better temperature resistance than 304.
Model 309s: multiple amounts of chromium, nickel, so heat -resistant, good antioxidant, products such as: heat exchangers, boiler components, jet engines.
Model 310s: contains up to the maximum chromium and nickel, so the best heat exchanger, boiler component, motor equipment for heat -resistant and antioxidant.
Model 316: Following 304, the second most widely used steel type is mainly used for the food industry and surgery equipment, adding molybdenum elements to obtain a special structure of corrosion. Because it has a better anti -chloride corrosion ability than 304, it is also used as "ship steel". SS316 is usually used in nuclear fuel recycling devices. Level 18/10 stainless steel usually meets this application level. It is especially used in chemical, seaside and other easy corrosive environments, ship assembly, and building materials.
Model 316L: Low -carbon is more corrosion -resistant and easy to treat. Products such as chemical processing equipment, nuclear energy generators, and frozen storage.
Model 321: In addition to adding titanium to the risk of titanium reduction, other properties are similar to 304, which is suitable for welding winemaking equipment, steam pipes, and aviation parts.
Model 347: Add stable element 铌, suitable for welding aviation equipment parts and chemical equipment.