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Stainless Steel 904L Pipes

Stainless steel 904L pipes is a non-stabilized austenitic stainless steel; the "L" in 904L stands for low carbon, indicating that the carbon content is kept low to enhance corrosion resistance. It contains high amounts of chromium, nickel, molybdenum, and copper, contributing to its excellent corrosion resistance in various environments, including sulfuric acid, phosphoric acid, and chloride ions. Its high alloy content also provides exceptional resistance to crevice corrosion and stress corrosion cracking. These pipes are available in various sizes, schedules, and specifications to suit industrial requirements. They are often used in piping systems for transporting corrosive fluids and gases where durability and reliability are crucial.

Chemical Composition of Stainless Steel 904L Pipes:

Discover the corrosion-resistant excellence of 904L stainless steel pipes through a comprehensive table showcasing chemical composition.

Element

% Present (in product form)

Carbon (C)

0.02

Silicon (Si)

0.70

Manganese (Mn)

2.00

Phosphorous (P)

0.03

Sulfur (S)

0.01

Chromium (Cr)

19.00 - 21.00

Nickel (Ni)

24.00 - 26.00

Nitrogen (N)

0.15

Molybdenum (Mo)

4.00 - 5.00

Copper (Cu)

1.20 - 2.00

Iron (Fe)

Balance

904L stainless steel pipes exhibit superior corrosion resistance and robust properties, ensuring durability in diverse applications.

Types of Stainless Steel 904L Pipes:

Stainless steel 904L pipes are available in various types based on their manufacturing processes, dimensions, and intended applications. Here are some common types of 904L stainless steel pipes:

  1. Seamless Pipes: Seamless 904L stainless steel pipes are manufactured without any welding seams. They are produced by extruding a solid billet through a die to form the desired shape. Seamless pipes are often preferred for applications where high pressure and corrosion resistance are critical.
  2. Welded Pipes: Welded 904L stainless steel pipes are manufactured by welding together the edges of a flat strip or plate. This welding process can be either electric resistance welding (ERW), submerged arc welding (SAW), or other methods. Welded pipes are suitable for less critical applications and are generally more economical than seamless pipes.
  3. ERW (Electric Resistance Welded) Pipes: ERW 904L stainless steel pipes are produced using electric resistance welding to create a strong bond between the edges of the steel strips. These pipes are cost-effective and widely used for various applications.
  4. EFW (Electric Fusion Welded) Pipes: EFW 904L stainless steel pipes are manufactured by applying an electric charge to melt the edges of the steel plate, forming a molten pool, and then welding them together. This process is suitable for producing larger-diameter pipes.

Mechanical Properties of Stainless Steel 904L Pipes:

Explore the robust strength and durability of 904L stainless steel pipes through a detailed mechanical properties table.

Temper

Annealed

Tensile Rm

71

ksi (min)

Tensile Rm

490

MPa (min)

R.p. 0.2% Yield

32

ksi (min)

R.p. 0.2% Yield

220

MPa (min)

Elongation (2” or 4D gl)

35

% (min)

904L stainless steel pipes shows exceptional mechanical properties, ensuring strength, durability, and reliability in varied applications.

Advantages of Stainless Steel 904L Pipes:

  1. Corrosion Resistance: One of the primary advantages of stainless steel 904L pipes is their superior corrosion resistance, particularly in harsh environments containing acids, chlorides, and other corrosive agents. This property makes them ideal for applications concerning corrosion, such as chemical processing plants and offshore oil rigs.
  2. High-Temperature Resistance: 904L Stainless Steel Pipes exhibit excellent mechanical properties at elevated temperatures, making them suitable for use in high-temperature applications such as heat exchangers and furnace components.
  3. Durability: Due to its high alloy content and unique composition, stainless steel 904L pipes offers exceptional durability and long-term performance, reducing the need for frequent maintenance and replacement.
  4. Ease of Fabrication: Despite their superior properties, 904L stainless steel pipes are relatively easy to fabricate, weld, and form into various shapes, allowing customization to meet specific project requirements.
  5. Hygienic Properties: In industries such as pharmaceuticals and food processing, where hygiene is paramount, 904L Stainless Steel Pipes are preferred for their smooth surface finish, which discourages bacterial growth and makes cleaning and sterilization processes more effective.
  6. Cost-Effectiveness: While 904L Stainless Steel Pipes may have a higher initial cost than other materials, their long-term durability and low maintenance requirements contribute to cost savings over the lifetime of the equipment or infrastructure.

Physical Properties of Stainless Steel 904L Pipes:

Dive into the foundational characteristics of 904L stainless steel pipes with an insightful physical properties table overview.

Specific Heat (0-100°C)

450

J.kg-1.°K-1

Thermal Conductivity

11.5

W.m -1.°K-1

Thermal Expansion

15.8

μm/μm/°C

Modulus Elasticity

190

GPa

Electrical Resistivity

9.52

Ohm-cm

Density

7.95

g/cm3

904L stainless steel pipes boast exceptional physical properties, ensuring reliability and longevity in diverse industrial applications.

Applications of Stainless Steel 904L Pipes:

  • Chemical Processing: Stainless steel 904L pipes are widely used in chemical processing plants for transporting corrosive chemicals, acids, and solvents. Their resistance to corrosion and high temperatures makes them indispensable for maintaining process integrity and safety.
  • Oil and Gas Industry: In offshore and onshore oil and gas facilities, stainless steel 904L pipes are employed in critical applications such as oil and gas transportation, refining, and petrochemical processing. Their ability to withstand corrosive environments and high-pressure conditions ensures reliable performance in these demanding settings.
  • Pharmaceuticals: The pharmaceutical industry relies on stainless steel 904L pipes for the hygienic and sterile processing of pharmaceutical products. Their corrosion resistance, cleanliness, and compatibility with stringent regulatory requirements make them the preferred choice for pharmaceutical manufacturing processes.
  • Desalination Plants: Stainless steel 904L pipes play a vital role in desalination plants where seawater is converted into potable water. Their resistance to corrosion by seawater and chloride ions ensures the integrity of the desalination infrastructure.
  • Power Generation: In power plants, stainless steel 904L pipes are used for conveying steam, condensate, and other fluids in boilers, heat exchangers, and cooling systems. Their ability to withstand high temperatures and corrosive environments is essential for efficient power generation operations.

Stainless steel 904L pipes offer a compelling combination of corrosion resistance, durability, and versatility, making them indispensable in various industrial applications. Whether in chemical processing, oil and gas, pharmaceuticals, or power generation, these pipes provide reliable performance and long-term value, contributing to the efficiency and safety of various processes and infrastructure.

Stainless steel 904L pipes is a non-stabilized austenitic stainless steel; the "L" in 904L stands for low carbon, indicating that the carbon content is kept low to enhance corrosion resistance. It contains high amounts of chromium, nickel, molybdenum, and copper, contributing to its excellent corrosion resistance in various environments, including sulfuric acid, phosphoric acid, and chloride ions. Its high alloy content also provides exceptional resistance to crevice corrosion and stress corrosion cracking. These pipes are available in various sizes, schedules, and specifications to suit industrial requirements. They are often used in piping systems for transporting corrosive fluids and gases where durability and reliability are crucial.

Chemical Composition of Stainless Steel 904L Pipes:

Discover the corrosion-resistant excellence of 904L stainless steel pipes through a comprehensive table showcasing chemical composition.

Element

% Present (in product form)

Carbon (C)

0.02

Silicon (Si)

0.70

Manganese (Mn)

2.00

Phosphorous (P)

0.03

Sulfur (S)

0.01

Chromium (Cr)

19.00 - 21.00

Nickel (Ni)

24.00 - 26.00

Nitrogen (N)

0.15

Molybdenum (Mo)

4.00 - 5.00

Copper (Cu)

1.20 - 2.00

Iron (Fe)

Balance

904L stainless steel pipes exhibit superior corrosion resistance and robust properties, ensuring durability in diverse applications.

Types of Stainless Steel 904L Pipes:

Stainless steel 904L pipes are available in various types based on their manufacturing processes, dimensions, and intended applications. Here are some common types of 904L stainless steel pipes:

  1. Seamless Pipes: Seamless 904L stainless steel pipes are manufactured without any welding seams. They are produced by extruding a solid billet through a die to form the desired shape. Seamless pipes are often preferred for applications where high pressure and corrosion resistance are critical.
  2. Welded Pipes: Welded 904L stainless steel pipes are manufactured by welding together the edges of a flat strip or plate. This welding process can be either electric resistance welding (ERW), submerged arc welding (SAW), or other methods. Welded pipes are suitable for less critical applications and are generally more economical than seamless pipes.
  3. ERW (Electric Resistance Welded) Pipes: ERW 904L stainless steel pipes are produced using electric resistance welding to create a strong bond between the edges of the steel strips. These pipes are cost-effective and widely used for various applications.
  4. EFW (Electric Fusion Welded) Pipes: EFW 904L stainless steel pipes are manufactured by applying an electric charge to melt the edges of the steel plate, forming a molten pool, and then welding them together. This process is suitable for producing larger-diameter pipes.

Mechanical Properties of Stainless Steel 904L Pipes:

Explore the robust strength and durability of 904L stainless steel pipes through a detailed mechanical properties table.

Temper

Annealed

Tensile Rm

71

ksi (min)

Tensile Rm

490

MPa (min)

R.p. 0.2% Yield

32

ksi (min)

R.p. 0.2% Yield

220

MPa (min)

Elongation (2” or 4D gl)

35

% (min)

904L stainless steel pipes shows exceptional mechanical properties, ensuring strength, durability, and reliability in varied applications.

Advantages of Stainless Steel 904L Pipes:

  1. Corrosion Resistance: One of the primary advantages of stainless steel 904L pipes is their superior corrosion resistance, particularly in harsh environments containing acids, chlorides, and other corrosive agents. This property makes them ideal for applications concerning corrosion, such as chemical processing plants and offshore oil rigs.
  2. High-Temperature Resistance: 904L Stainless Steel Pipes exhibit excellent mechanical properties at elevated temperatures, making them suitable for use in high-temperature applications such as heat exchangers and furnace components.
  3. Durability: Due to its high alloy content and unique composition, stainless steel 904L pipes offers exceptional durability and long-term performance, reducing the need for frequent maintenance and replacement.
  4. Ease of Fabrication: Despite their superior properties, 904L stainless steel pipes are relatively easy to fabricate, weld, and form into various shapes, allowing customization to meet specific project requirements.
  5. Hygienic Properties: In industries such as pharmaceuticals and food processing, where hygiene is paramount, 904L Stainless Steel Pipes are preferred for their smooth surface finish, which discourages bacterial growth and makes cleaning and sterilization processes more effective.
  6. Cost-Effectiveness: While 904L Stainless Steel Pipes may have a higher initial cost than other materials, their long-term durability and low maintenance requirements contribute to cost savings over the lifetime of the equipment or infrastructure.

Physical Properties of Stainless Steel 904L Pipes:

Dive into the foundational characteristics of 904L stainless steel pipes with an insightful physical properties table overview.

Specific Heat (0-100°C)

450

J.kg-1.°K-1

Thermal Conductivity

11.5

W.m -1.°K-1

Thermal Expansion

15.8

μm/μm/°C

Modulus Elasticity

190

GPa

Electrical Resistivity

9.52

Ohm-cm

Density

7.95

g/cm3

904L stainless steel pipes boast exceptional physical properties, ensuring reliability and longevity in diverse industrial applications.

Applications of Stainless Steel 904L Pipes:

  • Chemical Processing: Stainless steel 904L pipes are widely used in chemical processing plants for transporting corrosive chemicals, acids, and solvents. Their resistance to corrosion and high temperatures makes them indispensable for maintaining process integrity and safety.
  • Oil and Gas Industry: In offshore and onshore oil and gas facilities, stainless steel 904L pipes are employed in critical applications such as oil and gas transportation, refining, and petrochemical processing. Their ability to withstand corrosive environments and high-pressure conditions ensures reliable performance in these demanding settings.
  • Pharmaceuticals: The pharmaceutical industry relies on stainless steel 904L pipes for the hygienic and sterile processing of pharmaceutical products. Their corrosion resistance, cleanliness, and compatibility with stringent regulatory requirements make them the preferred choice for pharmaceutical manufacturing processes.
  • Desalination Plants: Stainless steel 904L pipes play a vital role in desalination plants where seawater is converted into potable water. Their resistance to corrosion by seawater and chloride ions ensures the integrity of the desalination infrastructure.
  • Power Generation: In power plants, stainless steel 904L pipes are used for conveying steam, condensate, and other fluids in boilers, heat exchangers, and cooling systems. Their ability to withstand high temperatures and corrosive environments is essential for efficient power generation operations.

Stainless steel 904L pipes offer a compelling combination of corrosion resistance, durability, and versatility, making them indispensable in various industrial applications. Whether in chemical processing, oil and gas, pharmaceuticals, or power generation, these pipes provide reliable performance and long-term value, contributing to the efficiency and safety of various processes and infrastructure.

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Stainless Steel 904L Pipes FAQ's  

Stainless steel 904L pipes have a pressure rating of up to 290 bar.

Stainless Steel 904L pipes have applications in the chemical processing, oil and gas industry, pollution control equipment, seawater coolers and heat exchangers

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