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Duplex Steel S31803 Flanges

Duplex Steel S31803 flanges are essential accessories in piping systems that are well appreciated due to their superior strength, corrosion resistance, and durability. These flanges are manufactured from duplex stainless steel, S31803, which combines ferrite and austenite. This composition endows certain mechanical and chemical characteristics that make S31803 flanges ideal for various industries.  

Chemical Composition of Duplex Steel S31803 Flanges

The composition of Duplex Steel S31803 flanges is crucial for understanding its properties and performance in various industrial applications.

GradeCMnSiPSCrMoNiNFe
Duplex Steel S318030.030 max2.00 max1.00 max0.030 max0.020 max22 – 233 – 3.54.50 – 6.500.14 – 0.2063.72 min

Thus, this table provides valuable insights into the chemical composition of these flanges, highlighting their properties and suitability. 

Mechanical Properties of Duplex Steel S31803 Flanges

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Duplex Steel S31803 flanges in demanding environments.

DensityMelting Point (°C)Tensile StrengthYield Strength (0.2%Offset)Elongation
7.8 g/cm 31350 °C (2460 °F)Psi – 80000 , MPa – 550Psi – 116000 , MPa – 80015 %

Thus, this valuable data on the strength, flexibility, and resilience of Duplex Steel S31803 flanges is crucial for ensuring reliability and longevity.

Advantages of Duplex Steel S31803 Flanges

These flexible Flangess offer numerous benefits for various industrial applications, as follows.

  • High Strength: Duplex Steel S31803 flanges possess a higher mechanical strength than the austenitic and ferritic stainless steels. Therefore, they can sustain pressure and load and are suitable for essential pipe work.
  • Excellent Corrosion Resistance: These flanges have a very high resistance to corrosion such as pitting, crevice corrosion and stress corrosion cracking. They excel in harsh conditions that involve chlorides and acids, as well as aggressive conditions.
  • Fatigue and Erosion Resistance: Duplex Steel S31803 flanges show excellent fatigue and erosion properties. They have a longer life in the environment when subjected to cyclic loading and abrasive material.
  • Weldability and Fabrication: These flanges are readily weldable and can also be shaped into any form without the danger of becoming sensitised, thus giving strong welded joints in pipelines.
  • Cost-Effectiveness: Since the strength of the Duplex Steel S31803 flanges is very high and can resist corrosion, the amount of material used and the maintenance cost are less over the period. Therefore, the operating cost is less.

Duplex Steel S31803 Flanges offers several advantages that make them suitable for industrial and commercial applications.

Common Applications of Duplex Steel S31803 Flanges

Due to its excellent features, the Duplex Steel S31803 Flanges is preferred in various industrial applications. Some of the main applications include.

  • Oil and Gas Industry: Duplex Steel S31803 flanges are used in oil and gas industries, especially in drilling units, subsea pipelines, and refineries subjected to corrosive seawater and high pressure.
  • Chemical Processing: These flanges are used in chemical industries to join reactors, vessels, and pipes to handle chemicals and acids.
  • Marine Applications: Due to its excellent corrosion-resistant properties, the Duplex Steel S31803 flanges are widely used in the marine industry, including shipping, desalination and offshore industries.
  • Energy Sector: They are widely used in power generation plants, especially where high temperature and high-pressure steam are used, and the material must be resistant to corrosion and highly reliable.
  • Food and Pharmaceutical Industries: These flanges comply with hygiene and corrosion-resistant processing equipment for food, pharmaceutical and biotechnology industries.
  • Construction and Infrastructure: Duplex Steel S31803 flanges are used in construction industries to join piping systems in buildings, bridges, and structures subjected to a corrosive atmosphere.

Duplex Steel S31803 Flanges are applied across various industries due to their valuable features, making them versatile.

Duplex Steel S31803 flanges are essential accessories in piping systems that are well appreciated due to their superior strength, corrosion resistance, and durability. These flanges are manufactured from duplex stainless steel, S31803, which combines ferrite and austenite. This composition endows certain mechanical and chemical characteristics that make S31803 flanges ideal for various industries.  

Chemical Composition of Duplex Steel S31803 Flanges

The composition of Duplex Steel S31803 flanges is crucial for understanding its properties and performance in various industrial applications.

GradeCMnSiPSCrMoNiNFe
Duplex Steel S318030.030 max2.00 max1.00 max0.030 max0.020 max22 – 233 – 3.54.50 – 6.500.14 – 0.2063.72 min

Thus, this table provides valuable insights into the chemical composition of these flanges, highlighting their properties and suitability. 

Mechanical Properties of Duplex Steel S31803 Flanges

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Duplex Steel S31803 flanges in demanding environments.

DensityMelting Point (°C)Tensile StrengthYield Strength (0.2%Offset)Elongation
7.8 g/cm 31350 °C (2460 °F)Psi – 80000 , MPa – 550Psi – 116000 , MPa – 80015 %

Thus, this valuable data on the strength, flexibility, and resilience of Duplex Steel S31803 flanges is crucial for ensuring reliability and longevity.

Advantages of Duplex Steel S31803 Flanges

These flexible Flangess offer numerous benefits for various industrial applications, as follows.

  • High Strength: Duplex Steel S31803 flanges possess a higher mechanical strength than the austenitic and ferritic stainless steels. Therefore, they can sustain pressure and load and are suitable for essential pipe work.
  • Excellent Corrosion Resistance: These flanges have a very high resistance to corrosion such as pitting, crevice corrosion and stress corrosion cracking. They excel in harsh conditions that involve chlorides and acids, as well as aggressive conditions.
  • Fatigue and Erosion Resistance: Duplex Steel S31803 flanges show excellent fatigue and erosion properties. They have a longer life in the environment when subjected to cyclic loading and abrasive material.
  • Weldability and Fabrication: These flanges are readily weldable and can also be shaped into any form without the danger of becoming sensitised, thus giving strong welded joints in pipelines.
  • Cost-Effectiveness: Since the strength of the Duplex Steel S31803 flanges is very high and can resist corrosion, the amount of material used and the maintenance cost are less over the period. Therefore, the operating cost is less.

Duplex Steel S31803 Flanges offers several advantages that make them suitable for industrial and commercial applications.

Common Applications of Duplex Steel S31803 Flanges

Due to its excellent features, the Duplex Steel S31803 Flanges is preferred in various industrial applications. Some of the main applications include.

  • Oil and Gas Industry: Duplex Steel S31803 flanges are used in oil and gas industries, especially in drilling units, subsea pipelines, and refineries subjected to corrosive seawater and high pressure.
  • Chemical Processing: These flanges are used in chemical industries to join reactors, vessels, and pipes to handle chemicals and acids.
  • Marine Applications: Due to its excellent corrosion-resistant properties, the Duplex Steel S31803 flanges are widely used in the marine industry, including shipping, desalination and offshore industries.
  • Energy Sector: They are widely used in power generation plants, especially where high temperature and high-pressure steam are used, and the material must be resistant to corrosion and highly reliable.
  • Food and Pharmaceutical Industries: These flanges comply with hygiene and corrosion-resistant processing equipment for food, pharmaceutical and biotechnology industries.
  • Construction and Infrastructure: Duplex Steel S31803 flanges are used in construction industries to join piping systems in buildings, bridges, and structures subjected to a corrosive atmosphere.

Duplex Steel S31803 Flanges are applied across various industries due to their valuable features, making them versatile.

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Duplex Steel S31803 Flanges FAQ's  

Duplex Steel S31803 Flanges are fittings that are used to connect two pieces of tubing or piping in order to facilitate the flow of liquids or gasses. They provide a secure, leak-proof connection between the pipes, and can also be used for pressure relief or isolation purposes.

Duplex Steel S31803 Flanges typically come in standard sizes ranging from 1/2" to 24", while larger sizes can be custom manufactured.

You can purchase Duplex Steel S31803 Flanges online or at most retail stores that sell plumbing supplies and materials.
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