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What are Duplex Steel Elbow

What are Duplex Steel Elbow

Duplex stainless steel, also known as merely duplex steel or duplex, is more robust than regular stainless steel. This implies that less metal is required to deliver the same level of durability and strength. As a result, projects can achieve the same (or better) results while producing a lighter final product.


This steel has a strong resistance to pitting, cracking, and corrosion thanks to the several alloys that make up its composition. As the name suggests, a super duplex has all the advantages of a duplex plus more!

Super duplex steel is much stronger than duplex steel and has greater resistance to corrosion and pitting thanks to the additional chromium, nitrogen, and molybdenum added during the manufacturing process.


Super duplex stainless steel is best suited for extremely demanding applications, such as work in the mining, chemical, petrochemical, energy, marine, and pulp and paper sectors. It has stronger strength and corrosion resistance than stainless or duplex stainless.

 Advantages of Duplex Steel

  • High strength.
  • High resistance to pitting, and crevice corrosion resistance.
  • High resistance to stress corrosion cracking, corrosion fatigue and erosion.
  • Excellent resistance to chloride stress-corrosion cracking.
  • High thermal conductivity.
  • Low coefficient of thermal expansion.

Functions Of Super Duplex Stainless Steel 

Super Duplex stainless steel plays a vital part in the construction of bridges, which require strong corrosion resistance in addition to saline environments and high load-bearing strength.


Duplex stainless steel pipe and plates are used. These steels are frequently used in the construction of bridges throughout many different countries, especially in sheet and pipe form. These are also used in the construction of airport roofs. They cost less and have the necessary strength compared to other kinds of steel.

Making of a Duplex

The first cast was produced in Sweden in 1930, however, duplex steels had been present since the 1920s. The usage of duplexes, however, didn't start to take off until the advancement of steelmaking technology some 30 years ago. Although each has shortcomings that restrict its usage, austenitic and ferritic metals, which are combined to make Duplex, are both appropriate for use in a range of circumstances.


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