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Stainless Steel 309S Bars

Stainless Steel 309S Bars are stainless steel variants that can tolerate heat best and have a high resistance to oxidation at elevated temperatures. These bars have been specially designed for application in environments with prolonged exposure to elevated temperatures and thermal cycling, often encountered in furnaces, heat treatment equipment, and exhaust systems.

Chemical Composition of SS 309S Bars

The composition of stainless steel 309S bars is crucial for understanding their properties and performance in various industrial applications.

GradeCSiPSCrMnNiFe
309S0.08 max1.0 max0.045 max0.030 max22.0 - 24.02.0 max12.0 - 15.0Remainder

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

Mechanical Properties of Stainless steel 309S Bars

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Stainless steel 309S bars in demanding environments.

GradeTensile Strength (ksi)0.2% Yield Strength (ksi)Elongation% in 2 inches
309S702540

Thus, this valuable data on the strength, flexibility, and resilience of stainless steel 309S bars is crucial for ensuring reliability and longevity.

Advantages of Stainless Steel 309S Bars

SS 306S Bars offer numerous benefits for various industrial applications, which are as follows:

  •  High-temperature Strength: SS 309S Bars provide excellent strength when subjected to high temperatures; hence, they can withstand excessive heat over time without significantly losing their mechanical characteristics or deformation.
  • Oxidation Resistance: Stainless steel 309S Bars also show great oxidation resistance even at temperatures more than 1000oC.
  • Creep Resistance: Stainless steel 309S Bars have the best creep resistance. Under high stress and elevated temperature conditions, they deform less due to their superior creep properties.
  • Corrosion Resistance: Despite their relatively high chromium and nickel contents, stainless steel 309S Bars still possess improved corrosion resistance even in slightly corrosive environments
  •  Long Service Life: Stainless Steel 309S bars can last much longer due to their ability to withstand higher temperatures, high rates of oxidation and hard-wearing quality than, thus reducing replacement costs.
  • Compatibility with Thermal Insulation: Stainless steel 309S Bars can be insulated which improves their thermal resistance. This makes them best suited for situations where thermal insulation is needed to reduce minimal heat losses and gains.
  • Regulatory Compliance: Consequently, stainless steel 309S Bars comply with industry standards and regulations governing high-temperature or corrosive service materials, guaranteeing safety, dependability, and excellence across various industrial applications.

Stainless steel 309S Bars offer several advantages that make them suitable for industrial and commercial piping applications.   

Applications of Stainless Steel 309S Bars

Due to their excellent features, Stainless Steel 309S bars are preferred in various industrial applications. Some of the main applications include

  • Furnace Components: The primary application of Stainless Steel 309S Bars is in the fabrication process of furnace components, including radiant tubes, heat treatment trays, and furnace lining. 
  • Heat Treatment Equipment: They are used in heat treatment equipment such as annealing furnaces, quenching tanks and tempering ovens. 
  •  Exhaust Systems: SS 309S Bars are used in exhaust systems for automobiles, aircraft and industries. They are ideal for use in exhaust manifolds, catalytic converters and mufflers because they can operate at high temperatures.
  • Chemical Processing: Stainless Steel 309S resist oxidation/corrosion, enabling instruments like reactors to remain intact even when handling strong oxidizing agents at high temperatures.
  •  Aerospace Components: These bars are used in jet engine parts, combustion chambers and exhaust nozzles due to high-temperature strength and oxidation resistance.
  •  Power Generation: Stainless Steel 309S Bars are used in power generation facilities for components such as boiler tubes, superheater tubes, and turbine blades. Power generation applications require materials that can withstand high temperatures and thermal cycling.
  • Petrochemical Industry: Some petrochemical stainless steel 309S bars equipment include heat exchangers, process piping and pressure vessels. Chemical plants usually operate at elevated temperatures using corrosive fluids.
  • Oil and Gas Industry: Stainless Steel 309S Bars are used in pipelines, heat exchangers, and other vessels within the oil industry, while others are used in oil-processing matters. 

 Stainless Steel 309S Bars can effectively resist damage by corrosive chemicals, even at highe temperatures.

Stainless Steel 309S Bars are stainless steel variants that can tolerate heat best and have a high resistance to oxidation at elevated temperatures. These bars have been specially designed for application in environments with prolonged exposure to elevated temperatures and thermal cycling, often encountered in furnaces, heat treatment equipment, and exhaust systems.

Chemical Composition of SS 309S Bars

The composition of stainless steel 309S bars is crucial for understanding their properties and performance in various industrial applications.

GradeCSiPSCrMnNiFe
309S0.08 max1.0 max0.045 max0.030 max22.0 - 24.02.0 max12.0 - 15.0Remainder

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

Mechanical Properties of Stainless steel 309S Bars

The table provides essential information for engineers and manufacturers to assess the integrity and durability of Stainless steel 309S bars in demanding environments.

GradeTensile Strength (ksi)0.2% Yield Strength (ksi)Elongation% in 2 inches
309S702540

Thus, this valuable data on the strength, flexibility, and resilience of stainless steel 309S bars is crucial for ensuring reliability and longevity.

Advantages of Stainless Steel 309S Bars

SS 306S Bars offer numerous benefits for various industrial applications, which are as follows:

  •  High-temperature Strength: SS 309S Bars provide excellent strength when subjected to high temperatures; hence, they can withstand excessive heat over time without significantly losing their mechanical characteristics or deformation.
  • Oxidation Resistance: Stainless steel 309S Bars also show great oxidation resistance even at temperatures more than 1000oC.
  • Creep Resistance: Stainless steel 309S Bars have the best creep resistance. Under high stress and elevated temperature conditions, they deform less due to their superior creep properties.
  • Corrosion Resistance: Despite their relatively high chromium and nickel contents, stainless steel 309S Bars still possess improved corrosion resistance even in slightly corrosive environments
  •  Long Service Life: Stainless Steel 309S bars can last much longer due to their ability to withstand higher temperatures, high rates of oxidation and hard-wearing quality than, thus reducing replacement costs.
  • Compatibility with Thermal Insulation: Stainless steel 309S Bars can be insulated which improves their thermal resistance. This makes them best suited for situations where thermal insulation is needed to reduce minimal heat losses and gains.
  • Regulatory Compliance: Consequently, stainless steel 309S Bars comply with industry standards and regulations governing high-temperature or corrosive service materials, guaranteeing safety, dependability, and excellence across various industrial applications.

Stainless steel 309S Bars offer several advantages that make them suitable for industrial and commercial piping applications.   

Applications of Stainless Steel 309S Bars

Due to their excellent features, Stainless Steel 309S bars are preferred in various industrial applications. Some of the main applications include

  • Furnace Components: The primary application of Stainless Steel 309S Bars is in the fabrication process of furnace components, including radiant tubes, heat treatment trays, and furnace lining. 
  • Heat Treatment Equipment: They are used in heat treatment equipment such as annealing furnaces, quenching tanks and tempering ovens. 
  •  Exhaust Systems: SS 309S Bars are used in exhaust systems for automobiles, aircraft and industries. They are ideal for use in exhaust manifolds, catalytic converters and mufflers because they can operate at high temperatures.
  • Chemical Processing: Stainless Steel 309S resist oxidation/corrosion, enabling instruments like reactors to remain intact even when handling strong oxidizing agents at high temperatures.
  •  Aerospace Components: These bars are used in jet engine parts, combustion chambers and exhaust nozzles due to high-temperature strength and oxidation resistance.
  •  Power Generation: Stainless Steel 309S Bars are used in power generation facilities for components such as boiler tubes, superheater tubes, and turbine blades. Power generation applications require materials that can withstand high temperatures and thermal cycling.
  • Petrochemical Industry: Some petrochemical stainless steel 309S bars equipment include heat exchangers, process piping and pressure vessels. Chemical plants usually operate at elevated temperatures using corrosive fluids.
  • Oil and Gas Industry: Stainless Steel 309S Bars are used in pipelines, heat exchangers, and other vessels within the oil industry, while others are used in oil-processing matters. 

 Stainless Steel 309S Bars can effectively resist damage by corrosive chemicals, even at highe temperatures.

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Stainless Steel 309S Bars FAQ's  

The Price Range For Stainless Steel 309S Bars Products Is ₹130 To ₹450 Per Kilogram.

309S stainless steel bars are widely used in a variety of industrial sectors due to its superior properties. Its high-temperature oxidation resistance, excellent heat resistance and excellent weldability make it the perfect choice for applications like food processing equipment, chemical process vessels, and petrochemical equipment. It also offers good mechanical strength and ductility, making it suitable for structural applications, such as bridges and buildings. 

309S grade has higher chromium content (18-20%) than most other grades of stainless steel, resulting in greater corrosion resistance. In addition, its high nickel content gives it additional strength and ductility which makes it beneficial for certain structural applications such as bridges and buildings.

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