Take a look at the applications for duplex stainless steel, its history, and the benefits it offers.


Duplex 2205 Sheet stainless steel combines the properties of austenitic and ferritic alloys, offering a lower cost than other steel alloys and the advantages of both with less inconvenience.

Choosing the right Ferralium 255 Plate stainless steel is also important in how the steel performs in its intended application.


What is Duplex Stainless Steel?

Duplex stainless steel is named after its duplex structure. The exact ratio depends on the grade, but most duplex stainless steels have a structure of approximately 50% austenite and 50% ferrite.


This gives 254 SMO Sheet steels many of the austenitic and ferritic steel families' advantages while minimizing their weaknesses.


As with other stainless steel families, the exact metal composition of the steel varies by grade, but the common components are:






Molybdenum, nitrogen, and copper can also be used to further influence the UNS S32205 Plate product's properties.

A brief history of duplex stainless steel

These early two-phase alloys contained relatively large amounts of carbon and were thus primarily limited to foundry production and specific applications.


However, in the late 1960s, decarburization allowed UNS S32750 Plate foundries to produce low carbon steels with high chromium and nickel content while balancing the structure of ferrite and austenite.


These Super Duplex 2507 Sheet stainless steel sheets share many similarities with the latest alloys manufactured today, especially the Duplex 2205 (UNS S21803/32205).


Developed in the mid-1970s, this alloy is still popular and offers better corrosion resistance than common austenitic stainless steel grades such as 304 (UNS S30400), 316 (UNS S31600), 317 (UNS S). I will. S31700).

The new standard uses different chromium, molybdenum, and nickel ranges, but for the range of duplex stainless steels used today, we can thank the original grades that started in the 1970s.


Advantages of duplex stainless steel

Duplex LDX 2101 Plate is only a small part of the global stainless steel market, but it offers many advantages over traditional austenitic and ferritic stainless steel grades.


Improved strength

Many duplex UNS S32760 Plate grades are twice as strong as austenitic and ferritic stainless steels.

High resistance to corrosion

Depending on the grade in question, duplex stainless steels 1.4501 Material offer equivalent (or better) corrosion resistance to common austenitic grades. For alloys high in nitrogen, molybdenum, and chromium, steel is highly resistant to crack corrosion and chloride pitting.



Duplex stainless steel provides all of the above benefits while requiring lower levels of molybdenum and nickel. This means a lower cost option than many traditional austenitic grades of 1.4462 Material. In many cases, the price of duplex alloys is less volatile than other grades, making it easier to estimate costs both at the initial level and in-service life. Corrosion resistance also means that many parts made of duplex stainless steel are thinner than their austenitic counterparts, which reduces costs.


Best Uses for Duplex Stainless Steel

Duplex1.4410 Material stainless steel is popular in various industries and markets, including excellent corrosion resistance and increased strength.