Development and application and development trend of stainless steel products

Global magnetic stainless steel sheets production, about 76% belong to the 300 series, which the international nickel price fluctuations in the price of nickel chromium stainless steel is considerable. Between the past year, prices of raw materials nickel, nickel-chromium makes relatively substantial growth in steel costs, leading consumers to have to actively look for alternatives, some of the market has also been replaced by alternatives. In recent years, low chromium stainless steel and nickel-based stainless steel (such as 200 series) development gradually by the parties seriously. Looking to the future, the proportion of low-chromium-nickel stainless steel and consumption will have to increase.
200 series stainless steel (Cr-Mn-Ni system)
Serious shortage of nickel supply during World War II, the German first developed manganese - nitrogen instead of part of the nickel stainless steel. 1950s, the United States is also the raw material due to the shortage of nickel, after in-depth research, successfully developed a series of high-manganese austenitic stainless steel or 200 stainless steel. 200 Series commonly used steel comprising: AISI 201 (16% ~ 18% Cr, 5.5% ~ 7.5% Mn, 3.5% ~ 5.5% Ni, <0.25% N), 202,205 and Indian J1, J4 (containing Cu) other costs 25% lower than the 304 for the general purposes of weak corrosive environments such as utensils, kitchenware, interior decoration, etc., poor welding performance. Recently, the US developed 204Cu (3% Cu), compared with 304 stainless steel, high strength, cold performance is more excellent corrosion resistance and 304 rather, it is possible to replace 304 become widely used stainless steel variety.
400 series stainless steel
400 series traces the development trend of adding Nb, Ti, Cu, Al improving deep drawability, weldability, corrosion resistance, antimicrobial resistance and high temperature strength, etc., can be partially replaced by 304, the main steel grades: SUS430LX, 430JIL, 444 , 445M2, NSS 477M1 and so on. United States and Japan have been widely used in automotive exhaust pipe (409, 410), the washing machine drum (430), kitchenware, household appliances, medical equipment, water heaters, roofs, walls, plants and so on.
Duplex stainless steel
Duplex stainless steel 301 is high chromium low nickel stainless steel, both austenitic stainless steel with excellent toughness and weldability of ferritic stainless steel high yield strength and resistance to chloride stress corrosion, the largest amount of SAF 2205. To reduce the development trend of duplex stainless steel nickel, manganese and nitrogen increase. The second generation of duplex stainless steel Avesta representatives. Bolalite developed LDX2101. Corrosion resistance is equivalent to 316, the intensity is 304 twice, the mechanical properties and 2205 equivalent potential applications comprising: steel, bridges, tankage, containers, train structure, water heaters and the like.