Duplex 2205 Stainless Steel Plate EN 1.4462 / S31803 / S32205 Stainless Steel Plates NO.1 2B Surface

Duplex 2205 Stainless Steel Plate EN 1.4462 / S31803 / S32205 Stainless Steel Plates NO.1 2B Surface

Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.

At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.

Duplex stainless steel is a combination of austenite and ferrite structures. This type of stainless steel features excellent strength, toughness, oxidation resistance, and corrosion resistance. One of the most popular duplex stainless steels is 2205 duplex stainless steel, which has a higher chromium and nitrogen content, providing higher strength and better corrosion resistance than other types of stainless steel. Let’s take a closer look at the properties and composition of UNS S32205.

Composition ranges for 2205 grade stainless steels

Grade specification comparisons for 2205 grade stainless steels

Applications

Some of the typical applications of duplex steel grade 2205 are listed below:

• Oil and gas exploration
• Processing equipment
• Transport, storage and chemical processing
• High chloride and marine environments
• Paper machines, liquor tanks, pulp and paper digesters

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