(1) Grade 301 Good ductility, used for molded products. It can also be hardened by mechanical processing. Good weldability. Wear resistance and fatigue strength are better than grade 304 stainless steel, used in products such as springs, steel structures, wheel covers.
(2) Grade 302:The corrosion resistance is the same as grade 304, and the strength is better due to the relatively high carbon content.
(3) Grade 303:It is easier to cut than grade 304 by adding a small amount of sulfur and phosphorus.
(4) Grade 304: It is a stainless steel that is non-magnetic and cannot be changed by heat treatment. The standard composition is 18 % chromium plus 8 % nickel. Used in products such as: corrosion-resistant containers, tableware, furniture, railings, medical equipment, some mobile phone frames.
(5) Grade 304L:It has the same characteristics as grade 304, but with low carbon, it is more resistant to corrosion and easy to heat treatment, but has poor mechanical properties. It is suitable for welding and products that are not easy to heat treatment.
(6) Grade 304N:With the same characteristics as grade 304, it is a nitrogen-containing stainless steel. Nitrogen is added to increase the strength of the steel.
(7) Grade 309:Better temperature resistance than grade 304.
(8) Grade 309S:With a large amount of chromium and nickel, it has good heat resistance and oxidation resistance, and is used in products such as heat exchangers, boiler components, and jet engines.
(9) Grade 310S:Contains the most chromium and nickel, so it has the best heat resistance and oxidation resistance. It is used in products such as heat exchangers, boiler components, and electrical equipment.
(10) Grade 316: After grade 304, the second most widely used steel grade, mainly used in the food industry and surgical equipment, the addition of molybdenum gives it a special structure that is resistant to corrosion. Because of its better resistance to chloride corrosion than grade 304, it is also used as "marine steel". SS316 is usually used in nuclear fuel recovery units. Grade 18/10 stainless steels generally also meet this application level. Especially used in chemical, seaside and other corrosive environments, ship assembly, building materials.
(11) Grade 316 L: Low carbon, so it is more resistant to corrosion and easy to heat treatment. It is used in products such as chemical processing equipment, nuclear power generators, and refrigerant storage tanks.
(12) Grade 321:Similar to grade 304, except that the risk of corrosion of the material weld is reduced due to the addition of titanium elements, suitable for welding. Used in products such as brewing equipment, steam pipes, aerospace parts.
(13) Grade 347 The stabilizing element niobium is added and is mainly used for welded parts used at high temperatures.
