200 Series - Chromium - Nickel - Manganese Austenitic Stainless Steel
Series 300 - Chromium - nickel austenitic stainless steel
Model 301 - Good ductility for molded products. Can also be hardened through mechanical processing. Weldability is good. Abrasion resistance and fatigue strength is better than 304 stainless steel, products such as: spring, steel, wheel cover.
Model 302: corrosion resistance with 304, due to relatively high carbon content and therefore better strength.
Model 303: Add a small amount of sulfur and phosphorus to make it more cutting than 304.
Model 304: Universal model; that is, 18/8 stainless steel. Products such as: corrosion-resistant containers, tableware, furniture, railings, medical equipment. Specified composition is 18% chromium plus 8% nickel. For the non-magnetic, can not be by means of heat treatment to change its structure of the stainless steel structure.
Model 304 L: the same characteristics and 304, but it is more corrosion-resistant low-carbon, easy to heat treatment, but poor mechanical properties of welding and not easy to deal with the heat of the product.
Model 304 N: the same characteristics as 304, is a nitrogen-containing stainless steel, nitrogen is to increase the strength of steel.
Model 309: better than the 304 temperature resistance.
Model 309 S: with a lot of chromium, nickel, so heat, good oxidation resistance, products such as: heat exchangers, boiler components, radiation engine.
Model 310 S: with the most amount of chromium, nickel, it is heat and oxidation resistance of the best heat exchangers, boiler components, electrical equipment.
Model 316: Following the 304, the second most commonly used steel, mainly for the food industry and surgical equipment, add molybdenum to make it a special anti-corrosion structure. Because of its better than the 304 anti-chloride corrosion can also be used as "marine steel" to use. SS316 is usually used for nuclear fuel recovery installation. 18/10 grade stainless steel is usually also suitable for this application level.  Special for chemical, seaside and other corrosive environment, ship assembly, building materials.
Model 316 L: low-carbon so more corrosion resistance, easy to heat treatment, products such as: chemical processing equipment, nuclear power generators, refrigerant storage bad.
Model 321: In addition to the addition of titanium elements to reduce the risk of data corrosion other than the weld similar to 304, suitable for welding wine equipment, steam pipes, aviation parts.
Model 347: Add stabilizing element niobium, suitable for welding aviation appliance parts and chemical equipment.
400 series: ferritic and martensitic stainless steel
Model 408: Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
Model 409: In addition to the addition of titanium, the lowest price model (Anglo-American), usually used for automobile exhaust pipe, is a ferritic stainless steel (chrome steel), suitable for welding, low cost automobile exhaust pipe, oil equipment .
Model 410: martensite (high-strength chrome steel), wear resistance, corrosion resistance is poor, suitable for pump. The chemical composition of 13% chromium, 0.15% or less of carbon and a small amount of other elements alloy. Raw material prices cheaper, with a magnetic, can be hardened by heat treatment. Common uses are bearings, medical equipment and knives and so on.
Model 416: Added sulfur improves processing properties.
Model 420: High carbon, higher hardness, higher strength, cutting edge grade "martensitic steel, similar to Brinell's high chromium steel. This earliest stainless steel can be very bright, suitable for knives, springs, surgical appliances, razors Cutting head, valve.
Model 430: Ferritic stainless steel, decorative, magnetic, for example, for automotive accessories. Good formability, but the temperature and corrosion resistance is poor, suitable for fasteners, tableware, furniture supplies. The standard chemical composition of 16 to 18% chromium, low carbon content. Such stainless steel is magnetic.
Model 434: molybdenum corrosion resistance than 430 excellent, suitable for tableware, wipers, car decoration.
Model 440: high-strength cutting tool steel, carbon is slightly higher, after proper heat treatment can achieve a higher yield strength, hardness can reach 58HRC, belonging to the hardest of the list of stainless steel. The most common application is the "razor blade". There are three commonly used models: 440A, 440B, 440C, in addition to 440F (easy processing type).
500 series: heat-resistant chromium alloy steel.
600 series: martensitic precipitation hardening stainless steel.