Normal Austenitic Stainless Steel

Austenitic stainless steels are widely used particularly in stainless steel screws due to their excellent resistance to corrosion.

Normal austenitic stainless steel. Austenitic stainless steel is a form of stainless steel alloy which has exceptional corrosion resistance and impressive mechanical properties while martensitic stainless steels is an alloy which has more chromium and ordinarily no nickel in it. Cementite is a form of iron which contains even more carbon than ferrite and austenite. Withstand the normal corrosive attack of the everyday environment that people experience while the most corrosion resistant grades can even withstand boiling seawater. Grade 304 stainless steel is generally regarded as the most common austenitic stainless steel.

Austenitic stainless steel grades. Austenitic stainless steels have a number of important advantages over the ferritic alloys 11 12. Other major alloying elements include manganese silicon and carbon. This family of stainless steels displays high toughness and impressive resistance to elevated temperatures.

If these alloys were to have any relative weaknesses they would be. In normal conditions austenitic stainless steels are given a high temperature heat treatment often called a solution treatment which gives a fully austenitic solid solution however at temperatures below about 800 c there is a tendency to precipitate chromium rich carbides as the alloy enters the carbide plus austenite phase field. Austenite is a solid solution of iron and carbon that comes into existence above the critical temperature of 723 c. Austenitic stainless steels are less resistant to cyclic oxidation than are ferritic grades.

Cementite contains up to 6 67 carbon. Summary austenitic vs martensitic stainless steel. Known for their formability and resistance to corrosion austenitic steels are the most widely used grade of stainless steel. Austenitic stainless steel has austenite as the primary microstructure.

As the name suggests the microstructure is composed of the austenite phase. I generally the most resistant to hydrogen embrittlement of all the classes of steel ii good baseline properties over a wide range of temperature from cryogenic to elevated temperature and iii very low hydrogen permeability the primary disadvantage of the austenitic stainless steels is. It contains high nickel content that is typically between 8 and 10 5 percent by weight and a high amount of chromium at approximately 18 to 20 percent by weight. Because of its increased carbon content cementite is hard and brittle and.

Although the nickel adds. Austenitic steels are non magnetic stainless steels that contain high levels of chromium and nickel and low levels of carbon. Austenitic stainless steels are classified in the 200 and 300 series with 16 to 30 chromium and 2 to 20 nickel for enhanced surface quality formability increased corrosion and wear resistance.