Explanation

The room temperature stable structure is austenite ferrite (or martensite) duplex structure of stainless steel. Generally contains high chromium (18% -25%) and a certain amount of nickel (4% -11%>), most of them contain a certain amount of molybdenum and chromium. Dual phase stainless steel is characterized by: the linear expansion coefficient and thermal conductivity lie between austenilic stainless steel and ferritic stainless steel; because the ferritic phase flashes, it has no magnetism; its strength is better than austenilic stainless steel, especially its yield strength; its resistance to seawater corrosion, organic acid and other special media corrosion is excellent; its carbon content is large, so it has good weldability. Dual phase does not Rust steel is widely used in chemical devices, pumps, pipes and other structural parts for seawater treatment, equipment and components contacting phosphoric acid, ammonium sulfate, acetic acid and other organic acids, and equipment and components that may suffer from pitting corrosion and stress corrosion;

Classification