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Duplex Steel S31803 Bolts

Duplex Steel S31803 bolts are used in various industries as a crucial element because of their high tensile strength, corrosion resistance, and longer service life. The S31803 grade is a part of the duplex stainless steel with a balanced structure of both austenite and ferrite phases, giving these bolts the right characteristics. These bolts are developed to work in tough conditions, and therefore, they are suitable for use in industries that require high performance and reliability.

Chemical Composition of Duplex Steel S31803 Bolts

The composition of Duplex Steel S31803 bolts 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 bolts, highlighting their properties and suitability. 

Mechanical Properties of Duplex Steel S31803 Bolts

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Duplex Steel S31803 bolts 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 bolts is crucial for ensuring reliability and longevity.

Advantages of Duplex Steel S31803 bars

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

  • High Strength: Duplex Steel S31803 bolts have greater tensile and yield strength than the austenitic and ferritic stainless steel. This makes it possible to use smaller bolts so that the structure could have less weight and cost.
  • Excellent Corrosion Resistance: These bolts are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-containing environments. This makes them suitable for use in aggressive and corrosive environments.
  • Improved Toughness and Ductility: The fact that S31803 bolts are made of duplex stainless steel with a microstructure that comprises both ferrite and austenite phases means that the bolts will be relatively smooth and stiff at low temperatures.
  • Good Fatigue and Erosion Resistance: The bolts made from Duplex Steel S31803 have high strength and toughness, which help in increasing the fatigue and erosive life of the bolts in cyclic loads and erosive environments.
  • Cost-Effective: Because of their high tensile and yield strength, Duplex Steel S31803 bolts can be used with fewer numbers of bolts and less frequent replacement during their service life; hence, the cost is lower.

Duplex Steel S31803 bars offer several advantages that make them suitable for industrial and commercial applications.

Common Applications of Duplex Steel S31803 Bars

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

  • Oil and Gas Industry: S31803 Duplex Steel bolts are ideal for the oil and gas industry for attaching pipelines, pressure vessels, and offshore platforms because of their superior strength and endurance in severe conditions.
  • Chemical Processing: These bolts are best suited for chemical processing plants where the equipment is likely to come into contact with chemicals. They guarantee long-term and secure connections in reactors, heat exchangers, and storage tanks.
  • Marine and Shipbuilding: The high resistance of Duplex Steel S31803 bolts towards corrosion in seawater and salt spray make them suitable for use in marine environments such as in shipbuilding, offshore structures and marine equipment.
  • Water Treatment Facilities: These bolts are applied in water treatment plants, which hold equipment and structures likely to be in contact with chlorinated water or other corrosive substances to guarantee durability.
  • Construction and Structural Applications: Due to the high tensile strength and fatigue resistance of Duplex Steel S31803 bolts, they are ideal for use in construction industries, particularly in structures exposed to adverse weather conditions.
  • Pharmaceutical Industry: The pharmaceutical industry enjoys the corrosion resistance and cleanliness of Duplex Steel S31803 bolts in equipment and processes that need a high level of hygiene.

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

Duplex Steel S31803 bolts are used in various industries as a crucial element because of their high tensile strength, corrosion resistance, and longer service life. The S31803 grade is a part of the duplex stainless steel with a balanced structure of both austenite and ferrite phases, giving these bolts the right characteristics. These bolts are developed to work in tough conditions, and therefore, they are suitable for use in industries that require high performance and reliability.

Chemical Composition of Duplex Steel S31803 Bolts

The composition of Duplex Steel S31803 bolts 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 bolts, highlighting their properties and suitability. 

Mechanical Properties of Duplex Steel S31803 Bolts

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Duplex Steel S31803 bolts 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 bolts is crucial for ensuring reliability and longevity.

Advantages of Duplex Steel S31803 bars

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

  • High Strength: Duplex Steel S31803 bolts have greater tensile and yield strength than the austenitic and ferritic stainless steel. This makes it possible to use smaller bolts so that the structure could have less weight and cost.
  • Excellent Corrosion Resistance: These bolts are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, particularly in chloride-containing environments. This makes them suitable for use in aggressive and corrosive environments.
  • Improved Toughness and Ductility: The fact that S31803 bolts are made of duplex stainless steel with a microstructure that comprises both ferrite and austenite phases means that the bolts will be relatively smooth and stiff at low temperatures.
  • Good Fatigue and Erosion Resistance: The bolts made from Duplex Steel S31803 have high strength and toughness, which help in increasing the fatigue and erosive life of the bolts in cyclic loads and erosive environments.
  • Cost-Effective: Because of their high tensile and yield strength, Duplex Steel S31803 bolts can be used with fewer numbers of bolts and less frequent replacement during their service life; hence, the cost is lower.

Duplex Steel S31803 bars offer several advantages that make them suitable for industrial and commercial applications.

Common Applications of Duplex Steel S31803 Bars

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

  • Oil and Gas Industry: S31803 Duplex Steel bolts are ideal for the oil and gas industry for attaching pipelines, pressure vessels, and offshore platforms because of their superior strength and endurance in severe conditions.
  • Chemical Processing: These bolts are best suited for chemical processing plants where the equipment is likely to come into contact with chemicals. They guarantee long-term and secure connections in reactors, heat exchangers, and storage tanks.
  • Marine and Shipbuilding: The high resistance of Duplex Steel S31803 bolts towards corrosion in seawater and salt spray make them suitable for use in marine environments such as in shipbuilding, offshore structures and marine equipment.
  • Water Treatment Facilities: These bolts are applied in water treatment plants, which hold equipment and structures likely to be in contact with chlorinated water or other corrosive substances to guarantee durability.
  • Construction and Structural Applications: Due to the high tensile strength and fatigue resistance of Duplex Steel S31803 bolts, they are ideal for use in construction industries, particularly in structures exposed to adverse weather conditions.
  • Pharmaceutical Industry: The pharmaceutical industry enjoys the corrosion resistance and cleanliness of Duplex Steel S31803 bolts in equipment and processes that need a high level of hygiene.

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

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Duplex Steel S31803 Bolts FAQ's  

Duplex Steel S31803 Bolts Starts At Rs 11/Piece To Rs 15/Piece

Duplex Steel S31803 bolts can be magnetic, although it is less magnetic than traditional ferritic and martensitic stainless steels. Magnetic properties may vary depending on composition & manufacturing process. Consult the supplier for specifics.

Yes, Duplex Steel S31803 bolts are known for their excellent corrosion resistance properties, suitable for use in marine, chemical processing, oil and gas production, and industrial applications.

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