Duplex stainless steel means that its microstructure is made up of ferrite phase and austenite phase two, each of which accounts for about 50%. In actual use, one of them is more appropriate between 40-60%.
According to the characteristics of the two-phase microstructure, through proper control of chemical composition and heat treatment process, the austenitic stainless steel with excellent toughness and weldability and ferritic stainless steel has high strength and resistance to chloride stress corrosion together, the duplex stainless steel is a kind of set into excellent corrosion resistance, high strength and easy machining and many other excellent properties.
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