The 09CuPCrNi-A weathering steel plate is characterized in that the alloy composition and weight percentage content of the weathering steel are: C: 0.12 to 0.21, Si: 0.2 to 2.0, Mn: 0.7 to 2.0, S ≤ 0.036, P ≤ 0.034, Cu: 0.10 to 0.40, Al <0.2, the rest are Fe and trace impurities. Through alloying of Cu, Mn, Si, Al, etc., and simple adjustment of some element content of ordinary low carbon steel (Q235 steel), it can produce good atmospheric corrosion resistance without changing the production process conditions of Q235 steel Economical weathering steel with comprehensive mechanical properties. 09CuPCrNi-A weathering steel plate is mainly used for steel structures used in railways, vehicles, bridges, towers and other long-term exposure to the atmosphere.
Development of 09CuPCrNi-A Weathering Steel Plates
09CuPCrNi-A steel is another typical weathering steel product developed by Baosteel Co., Ltd. after imitation of Corten A steel. It is divided into 295Mpa grade 09CuPCrNi and 345Mpa grade 09CuPCrNi-A according to different yield strength levels. Especially in 2002, it successfully developed 16 ~ 25 thick 09CuPCrNi-A, which has strong market competitiveness, and is mainly used in the manufacture of railway passenger cars in China. The 09CuPCrNi steel has been subjected to a static hanging test and a dynamic hanging test. The test results show that the industrial atmosphere (Wuhan Steel) and the marine atmosphere (Guangzhou) have a 5 year hanging film. Better corrosion resistance than CortenA steel, 09CuPCrNi-A steel is 2.7 ～ 1.4 times the corrosion resistance of Cu-containing carbon steel, better than CortenA steel, 5 years dynamic hanging test of railway vehicles, 09CuPCrNi steel has corrosion resistance of Cu-containing carbon steel 2.26 and 2.6 It is better than CortenA steel, and the corrosion resistance of 09CuPCrNi-A steel is 2.28 ～ 2.6 times that of Cu-containing carbon steel, which is better than CortenA steel.
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