Duplex Stainless Steel 2205 Chemical Composition

Combining many of the beneficial properties of both ferritic and austenitic steels 2205 is the most widely used duplex stainless steel grade.

Duplex stainless steel 2205 chemical composition.

2205 is a duplex stainless steel with a chemical composition of nearly equal proportions of austenite and ferrite. Saf 2205 also known as sandvik saf 2205 is a sandvik owned trademark for a 22cr duplex ferritic austenitic stainless steel. Saf derives from s andvik a ustenite f errite. 2205 is the most widely used duplex ferritic austenitic stainless steel grade.

The nominal chemical composition of saf 2205 is 22 chromium 5 nickel 3 2 molybdenum and other alloying elements such as nitrogen and manganese. The standard duplex s31803 composition has over the years been refined by many steel suppliers and the resulting restricted composition range was endorsed as uns s32205 in 1996. This combination allows the alloy to be stronger and tougher than standard austenitic steels. The microstructure provides resistance to stress corrosion cracking and ensures high strength.

Saf duplex 2205 stainless steel uns s32205 formerly known as uns s31803 and commonly known as alloy 2205 has a mixed microstructure of austenite and ferrite and is a two phase alloy based on the fe cr ni series. It finds applications due to both excellent corrosion resistance and high strength. Stainless steel alloy duplex 2205 uns s32205 duplex 2205 also known as uns s32205 is a nitrogen enhanced stainless steel. Other designations for 2205 are given in the table below.

Applications include chemical processing oil and gas exploration marine and other high chloride environments and paper digestors. It is the most widely used duplex stainless steel grade and is characterized by high yield strength double that of the standard austenitic stainless steel grades. Users choose duplex 2205 for its excellent corrosion resistance along with its high strength. Its high chromium and molybdenum content gives the stainless steel excellent corrosion resistance.

Due to excellent corrosion resistance and high strength the most widely used duplex stainless steel is 2205. 2205 is the most widely used duplex ferritic austenitic stainless steel grade.