The Superior Corrosion Resistance of 00Cr 24Ni6Mo2N Duplex Stainless Steel
Zhao Junliang Zhang Rende( Baosteel Group Shanghai No. 5 Steel Co. , Ltd. , Special Steel Technical Center, Shanghai 200940, China; Baosteel Group Shanghai Iron & Steel Research Institute, Shanghai 200940, China)
00Cr24Ni6Mo2N duplex stainless steel has superior corrosion resistance. After normal heat treatment its structure is consist of 50% ferrite and 50% austenite. The pitting corrosion is formed difficultly because its high pitting breakdown potential (Eb is + 1050mv) and protective potential (Ep is + 950mv). It would be passivated again even if there is pitting corrosion hole, which is also proved by both the room accelerated corrosion test and the marine corrosion test . The properties of the stress corrosion resistance and the impingement corrosion resistance are excellent too. It is believed that the 00Cr24Ni6Mo2N duplex stainless steel will be widely used and have a nice prospect.
【CateGory Index】： TG172