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UNS S31803

Duplex stainless steel UNS S31803 fasteners are double-phased Ferritic, 3% molybdenum, austenitic 22% chromium along with 5 to 6% of stainless steel that is alloyed with Nickel. It is one of the most widely utilized graded steel which shows amazing strength characteristics. The specifications of Duplex stainless steel UNS S31803 Fasteners are double of the basic grades of stainless steel. These types of stainless steel also show a very good strength of fatigue. Not only this they have also outstanding resistance to counter cracking of stress corrosion, crevice, pitting, erosion along with general corrosion in general working conditions and extreme environments.


They can be used in the different types of chemical processing, storage and transport as they can handle the workability in pressure vessels, pipes, and tanks along with heat exchangers. Their properties remain unaltered in different chloride and marine environments. They have high contents of chromium, nitrogen along with molybdenum which makes these fasteners as a super resistance of corrosion. Not only this, they also offer resistance to other types of corrosion like crevice and pitting in both acidic solutions and oxidizing conditions. Their ferrite content increases their workability even in the caustic atmosphere.

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