The CSRC announced on September 30, 20 19 that it recently approved the Shanghai Futures Exchange to conduct stainless steel futures trading, and its contract was officially listed and traded on September 25; Dalian Commodity Exchange was approved to conduct styrene futures trading, and its contract was officially listed and traded on September 26th.
3 16 stainless steel, 18Cr- 12Ni-2.5Mo have excellent corrosion resistance, atmospheric corrosion resistance and high temperature strength due to the addition of Mo, and can be used under harsh and cool conditions; Excellent work hardening (no magnetism). Equipment used in seawater, chemicals, dyes, paper, oxalic acid, fertilizer and other production equipment; Photography, food industry, facilities in coastal areas, ropes, CD rods, bolts and nuts.
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Stainless steel is generally used in corrosive environments, as well as medical devices and daily necessities. According to the main chemical composition, it is divided into chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel. It can be divided into acid-resistant stainless steel and heat-resistant stainless steel according to performance characteristics; Usually classified according to metallographic structure.
According to the metallographic structure, it can be divided into ferrite (F) stainless steel, martensite (M) stainless steel, austenite (A) stainless steel, austenite-ferrite (A-F) duplex stainless steel, austenite-martensite (A-M) duplex stainless steel and precipitation hardening (PH) stainless steel.