Duplex UNS S31803

Equivalent grade:

● UNS S31803
● DIN W. Nr. 1.4462
● EN 1.4462
● X2CrNiMoN22-5-3
● SAF 2205
● Z3 CN 22-05 AZ
● ASTM A182 F51
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◉ Available Products

  • Plate/Sheet

  • Bar/Rod

  • Pipe/Tube

  • U bend pipe

  • Coil tube

  • Pipe fittings (Flange,Tee, Elbow,Reducer...)

  • Strip

  • Fittings

  • Wire

  • Forgings

  • Fastener

  • Castings

  • Customization


◉ Product Details

Production standards
ProductASTM
Plates and SheetsA240
Bars and ShapesA276
Seamless PipesA790
Welded pipeA789
FittingsA815
ForgingsA182

 

Chemical composition

%CSiMnPSCrNiMoN
Min




214.52.50.08
Max0.03120.030.02236.53.50.2

 

Physical properties

density7.8 g/cm3
Melting1400°C ~ 1450°C

 

S31803 material properties

S31803 is a duplex stainless steel alloy characterized by a mixed microstructure of austenite and ferrite phases. It offers high strength, excellent corrosion resistance, and good weldability, making it suitable for various demanding applications. With its superior mechanical properties and resistance to corrosion, S31803 is widely utilized in industries requiring reliable performance in aggressive environments.

 

Advantage

1. High strength and toughness

2. Superior corrosion resistance

3. Good weldability and formability

4. Resistant to stress corrosion cracking

5. Cost-effective compared to high-alloy steels

6. Suitable for aggressive environments

7. Versatile for a wide range of applications

8. Long service life in challenging conditions

9. Resistance to chloride-induced pitting corrosion

10. Enhanced durability in harsh environments

 

S31803 material application areas

S31803 finds extensive use in industries such as chemical processing, oil and gas, marine, and desalination. It is employed in pipelines, heat exchangers, pressure vessels, and structural components requiring high strength and corrosion resistance. The alloy's versatility and durability make it ideal for applications where performance and reliability are paramount, even in challenging conditions such as corrosive and high-pressure environments.


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