Stainless steel features and uses

Series America Standard (ASTM) National Standard (GB) Japanese standard (SUS) Nature Application
200 201 1Cr17Mn6Ni5N SUS201 With acid and alkali resistance, high density, no bubbles, no pinholes, etc., it is used to produce high-quality materials for various cases and straps. Mainly used for decorative tubes, industrial tubes, and some shallow stretched products.
202 1Cr18Mn8Ni5N SUS202 By replacing part of nickel with Mn and N, a good mechanical property and corrosion resistance have been obtained. It is a new type of 321 Stainless Steel Bar that is nickel-retentive. Its room temperature strength is higher than that of 304, and it has good oxidation resistance below 800 degrees Celsius. Medium temperature intensity Mainly used for decorative tubes, industrial tubes, and some shallow stretched products.
2205 00Cr22Ni5Mo3N SUS2205 Its Cr, Mo, and N elements are relatively narrow and can easily reach phase equilibrium (that is, about half of the two phases), improve steel strength, corrosion resistance, and welding performance. They are often used for high performance requirements and require welding. The materials, such as oil and gas pipelines. It is used in heat exchangers, cold showers, and devices that are resistant to seawater, high temperature, and concentrated nitric acid, such as oil refining, chemical fertilizers, papermaking, petroleum, and chemical industries.
300 304 1Cr18Ni9(06Cr18Ni10) SUS304 As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Punching, bending and other hot workability, no heat treatment hardening (non-magnetic, operating temperature -196 °C ~ 800 °C) Food industry, household goods (1, 2 tableware, kitchen cabinets, indoor pipes, water heaters, boilers, bathtubs)
304J1 SUS304J1 Cu should be added, and its formability, especially wire-drawing and anti-aging cracking, is good, and it can be used to shape complex shapes. Its corrosion resistance is the same as 304 steel. Vacuum flasks, kitchen sinks, pots, pots, insulated lunch boxes, door handles, textile processing machines.
304L 00Cr19Ni10 SUS304L As a low-C 304 steel, its corrosion resistance is similar to that of 304 steel under normal conditions, but its resistance to grain boundary corrosion is excellent after welding or after eliminating stress. It can also maintain good corrosion resistance without heat treatment. It is generally used below 400 (non-magnetic, use temperature -196°C~800°C). Applied to field open-air machines, building materials, heat-resistant parts, and heat-treating parts that require high resistance to grain boundary corrosion in the chemical, coal, and petroleum industries
321 1Cr18Ni9Ti SUS321 Add Ti element in 304 steel to prevent grain boundary corrosion. Suitable for use at temperatures from 430°C to 900°C Medical Appliances, Building Materials, Chemicals, Agriculture, Marine Components, Atomic Energy Industry, Aircraft, Pipeline, Boiler Drum Auto Parts (Windshield Wipers, Mufflers, Molded Products)
316 0Cr17Ni12Mo2 SUS316 Mo should be added, so its corrosion resistance, atmospheric corrosion resistance, and high temperature strength are particularly good and can be used under severe conditions. Excellent work hardening (non-magnetic) Marine equipment, chemicals, dyes, paper. Oxalic acid, fertilizers and other production equipment; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts
316L 00Cr17Ni14Mo2 SUS316L As a low-C series of 316 steel grades, it has excellent grain boundary corrosion resistance, in addition to the same properties as 316 steel. 316 Steel products that are resistant to grain boundary corrosion and have special requirements.
309S 0Cr23Ni13Mo2 SUS309s 23Cr-13Ni high alloy steel stainless steel, excellent corrosion resistance and strength, suitable for parts with working temperature of 1000 °C Exhaust machines, heat treatment furnaces, heat exchangers, etc.
310S 0Cr25Ni20Si2 SUS310S Very good oxidation resistance, corrosion resistance, high temperature resistance, because a higher percentage of chromium and nickel, 310S has a much better creep strength, can continue working at high temperatures, with good high temperature resistance. Boiler, exhaust machine, heat treatment furnace and heat exchanger
400 409L 00Cr12Ti SUS409L The cheapest model. Due to the addition of Ti, its high temperature corrosion resistance and high temperature strength are better. Ferritic stainless steel (chrome steel) Car exhaust pipe, heat exchangers, containers and other products that are not heat-treated after welding
410 1Cr13 SUS410 The representative steel of martensitic steel, although high in strength, is not suitable for use under harsh corrosive environments. Its processing is good, heat treatment surface hardening (magnetic) Blades, mechanical parts, oil refining equipment, bolts, nuts, pump rods, cutlery (knives, forks)
410S 0Cr13 SUS410
420J1 2Cr13 SUS420J1 High hardness after quenching, good corrosion resistance (magnetic) Cutlery (knife), turbine blades
420J2 3Cr13 SUS420J2 After hardening, the hardness of the steel is higher than that of the 420J1 (magnetic) Blades, nozzles, valves, rulers, cutlery (scissors, knives)
430 1Cr17 SUS430 As a representative type of ferritic steel, low thermal expansion rate, excellent formability and oxidation resistance Heat-resistant appliances, burners, household appliances, type 2 cutlery, kitchen sinks, exterior trim materials, bolts, nuts, CD rods, screens
444 Water tank special board
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