Duplex Stainless Steel 2205 Chemical Composition

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.

Duplex stainless steel 2205 chemical composition.

Its most important properties are excellent corrosion resistance and high strength. Due to excellent corrosion resistance and high strength the most widely used duplex stainless steel is 2205. This combination allows the alloy to be stronger and tougher than standard austenitic steels. 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 name 2205 comes from a typical composition of 22 chromium and 5 nickel. Duplex 2205 is a two phase ferritic austenitic 22 chromium 3 molybdenum 5 to 6 nickel alloyed stainless steel. Stainless steel alloy duplex 2205 uns s32205 duplex 2205 also known as uns s32205 is a nitrogen enhanced stainless steel. Combining many of the beneficial properties of both ferritic and austenitic steels 2205 is the most widely used duplex stainless steel grade.

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. 2205 is the most widely used duplex ferritic austenitic stainless steel grade. Its high chromium and molybdenum content gives the stainless steel excellent corrosion resistance. Saf derives from s andvik a ustenite f errite.

Users choose duplex 2205 for its excellent corrosion resistance along with its high strength. Applications include chemical processing oil and gas exploration marine and other high chloride environments and paper digestors. Other designations for 2205 are given in the table below. 2205 is a duplex stainless steel with a chemical composition of nearly equal proportions of austenite and ferrite.

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. It finds applications due to both excellent corrosion resistance and high strength.