Stainless Steel 904l Pipe
904l Stainless Steel Pipe
Stainless Steel 904L pipes are high-performance products renowned for their superior corrosion resistance, excellent strength, and versatility in demanding applications. As a low-carbon, high-alloy austenitic stainless steel, 904L pipes are engineered to withstand harsh environments where conventional grades fail. With their exceptional resistance to acidic environments, such as sulfuric acid and phosphoric acid, Stainless Steel 904L pipes are ideal for chemical, pharmaceutical, and industrial applications.
Key Features of Stainless Steel 904L Pipes
Superior Corrosion Resistance: 904L pipes are designed with a high nickel and molybdenum content, offering exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
High Strength and Durability: The unique alloy composition ensures excellent mechanical properties, making these pipes suitable for high-pressure and high-temperature environments.
Low Carbon Content: The low carbon content minimizes carbide precipitation during welding, ensuring superior weldability and resistance to intergranular corrosion.
Versatility: Stainless Steel 904L pipes are versatile and can be used across a wide range of industries and applications.
Excellent Surface Finish: Available in polished, pickled, or custom finishes, these pipes provide aesthetic appeal along with functionality.
Stainless Steel 904l Seamless Pipes
Stainless Steel 904l Welded Pipes
Stainless Steel 904l Pipe Chemical Composition
| Element | Percentage |
| Nickel (Ni) | 23.0 – 28.0 |
| Chromium (Cr) | 19.0 – 23.0 |
| Molybdenum (Mo) | 4.0 – 5.0 |
| Copper (Cu) | 1.0 – 2.0 |
| Carbon (C) | ≤0.02 |
| Manganese (Mn) | ≤2.0 |
| Silicon (Si) | ≤1.0 |
| Phosphorus (P) | ≤0.045 |
| Sulfur (S) | ≤0.035 |
Stainless Steel 904l Pipe Mechanical Properties
| Property | Value |
| Tensile Strength (MPa) | ≥460 |
| Yield Strength (MPa) | ≥200 |
| Elongation (%) | ≥35 |
| Hardness (HB) | ≥192 |
Applications of Stainless Steel 904L Pipes
Stainless Steel 904L pipes are utilized in industries and environments that demand superior corrosion resistance and high performance. Below are key applications:
Chemical Processing Industry: Used in processing and handling systems for sulfuric acid, phosphoric acid, and acetic acid.
Oil and Gas Industry: Suitable for offshore platforms, pipelines, and refinery equipment due to their corrosion resistance.
Pharmaceutical and Biotechnology: Ideal for high-purity systems where contamination must be avoided.
Power Plants: Utilized in heat exchangers and condensers for nuclear and thermal power plants.
Pulp and Paper Industry: Used in digesters and bleaching equipment due to their ability to withstand acidic and chloride environments.
Marine Industry: Perfect for seawater systems, desalination plants, and marine environments.
Food and Beverage: Safe for food contact applications and resistant to corrosion in hygienic environments.
Benefits of Stainless Steel 904L Pipes
Extended Service Life: With unmatched corrosion resistance and durability, 904L pipes ensure a longer lifespan, reducing replacement costs.
Cost-Effective: Despite a higher initial investment, their longevity and low maintenance make them a cost-effective choice.
Environmental Sustainability: Stainless Steel 904L is 100% recyclable, supporting sustainable industrial practices.
Exceptional Cleanliness: With a smooth surface finish, these pipes prevent the accumulation of contaminants, ensuring cleanliness.
Stainless Steel 904L Pipe Dimensions
Stainless Steel 904L pipes are manufactured to meet international standards and customer-specific requirements. The following specifications are commonly offered:
Sizes: ¼ inch to 48 inches in diameter.
Thickness: Schedule 5 to Schedule XXS.
Standards: ASTM B677, ASME SB677, ASTM A312, ASME SA312.
Forms: Seamless, welded, and fabricated pipes.
Ends: Plain end, beveled end, and threaded end.
| Size (Nominal Pipe Size – NPS) | Outer Diameter (OD) | Wall Thickness (SCH 10 to SCH XXS) |
| 1/2 inch | 21.34 mm | 1.65 mm – 5.08 mm |
| 3/4 inch | 26.67 mm | 1.65 mm – 7.62 mm |
| 1 inch | 33.40 mm | 2.77 mm – 9.09 mm |
| 1 1/4 inch | 42.16 mm | 2.77 mm – 9.70 mm |
| 1 1/2 inch | 48.26 mm | 2.77 mm – 10.16 mm |
| 2 inch | 60.33 mm | 2.77 mm – 11.07 mm |
| 3 inch | 88.90 mm | 3.05 mm – 12.70 mm |
| 4 inch | 114.30 mm | 3.05 mm – 13.49 mm |
| 6 inch | 168.28 mm | 3.40 mm – 15.88 mm |
| 8 inch | 219.08 mm | 3.76 mm – 17.48 mm |
| 10 inch | 273.05 mm | 4.19 mm – 19.05 mm |
| 12 inch | 323.85 mm | 4.57 mm – 20.62 mm |
| 14 inch | 355.60 mm | 4.78 mm – 22.23 mm |
| 16 inch | 406.40 mm | 4.78 mm – 23.83 mm |
| 18 inch | 457.20 mm | 4.78 mm – 25.40 mm |
| 20 inch | 508.00 mm | 5.54 mm – 28.58 mm |
| 24 inch | 609.60 mm | 6.35 mm – 31.75 mm |
| 30 inch | 762.00 mm | 7.92 mm – 34.93 mm |
| 36 inch | 914.40 mm | 9.53 mm – 38.10 mm |
| 42 inch | 1066.80 mm | 12.70 mm – 40.89 mm |
| 48 inch | 1219.20 mm | 12.70 mm – 44.45 mm |
Grades Equivalent to Stainless Steel 904L
| Standard | Grade |
| UNS | N08904 |
| EN | 1.4539 |
| DIN | X1NiCrMoCu25-20-5 |
| JIS | SUS 890L |
Manufacturing and Quality Assurance
Stainless Steel 904L pipes are manufactured using advanced techniques, ensuring precision and adherence to quality standards. Key processes include:
Raw Material Selection: Only premium-grade alloys are used.
Cold Drawing and Hot Rolling: Ensures dimensional accuracy and uniformity.
Heat Treatment: Enhances mechanical properties and corrosion resistance.
Non-Destructive Testing (NDT): Includes ultrasonic testing, eddy current testing, and radiographic testing for defect-free products.
Surface Finishing: Polishing and pickling improve aesthetics and corrosion resistance.
Why Choose Stainless Steel 904L Pipes?
Global Standards Compliance: Manufactured to meet ASTM, ASME, and EN standards.
Customizable Solutions: Available in various sizes, shapes, and finishes.
Experienced Manufacturers: Produced by reputed suppliers with decades of expertise.
Reliable Performance: Proven performance in harsh industrial environments.
Maintenance and Care
To maximize the life of Stainless Steel 904L pipes, regular maintenance is essential. Recommended practices include:
Routine Cleaning: Use mild detergents and water to remove deposits.
Avoid Abrasive Cleaners: Prevent surface damage by using non-abrasive cleaning tools.
Periodic Inspections: Regularly check for signs of corrosion or damage.
Appropriate Handling: Avoid scratches and dents during installation and transportation.