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Girgaon, Mumbai - 400004
Stainless Steel 904L Seamless Tubes Manufacturer in India
What Are Stainless Steel 904L Seamless Tubes?
Stainless Steel 904L Seamless Tubes are high-alloy austenitic stainless steel tubes manufactured without a longitudinal weld, making them suitable for demanding applications where corrosion resistance and structural integrity are important. Grade 904L, designated as UNS N08904 / WNR 1.4539, contains high levels of nickel, chromium and molybdenum along with copper to provide enhanced resistance in aggressive chemical environments.
The combination of alloying elements gives 904L excellent resistance to sulfuric acid, phosphoric acid, chloride-containing media, pitting, crevice corrosion and stress corrosion cracking. Its low carbon content also supports good weldability and reduces the risk of sensitization during fabrication. These properties make the grade particularly useful where conventional stainless steel grades may not provide sufficient corrosion resistance.
For different service requirements, Stainless Steel 904L Seamless Tubes are available to relevant ASTM and ASME specifications, including ASTM A213, ASTM A269 and ASTM B677, where applicable. Tubes can be supplied in different outside diameters, wall thicknesses, schedules, surface finishes and lengths according to project requirements.
These seamless tubes are widely selected for chemical processing, pharmaceutical plants, petrochemical facilities, acid handling systems, heat exchangers, condensers, marine equipment, pollution control systems and seawater applications. Their seamless construction and high-alloy composition make them suitable for fluid-handling and process systems exposed to severe corrosive conditions.
Kamal Steels is a Manufacturer and Stockist of Stainless Steel 904L Seamless Tubes, offering standard and customized tubing solutions for domestic and international requirements. Tubes can be supplied with MTC, inspection documentation, testing reports and export-standard packaging to support critical industrial projects.
Table of Contents
- Stainless Steel 904L Seamless Tube Specifications
- Stainless Steel 904L Seamless Tube Size Chart
- Stainless Steel 904L Seamless Tube Standards
- Stainless Steel 904L Seamless Tube Features
- Stainless Steel 904L Chemical Composition
- Stainless Steel 904L Mechanical Properties
- Stainless Steel 904L Seamless Tube Applications
- Industries Using Stainless Steel 904L Seamless Tubes
- Frequently Asked Questions
Stainless Steel 904L Seamless Tube Specifications
Stainless Steel 904L Seamless Tubes are manufactured and supplied in different dimensions and material conditions to meet applicable standards and customer requirements.
| Specification | Stainless Steel 904L Seamless Tubes |
|---|---|
| Material | Stainless Steel |
| Grade | 904L |
| UNS | N08904 |
| WNR | 1.4539 |
| Tube Type | Seamless |
| ASTM Standards | ASTM A213, ASTM A269, ASTM B677 |
| ASME Standards | Applicable ASME SA Specifications |
| Outside Diameter | As per requirement |
| Wall Thickness | As per requirement |
| Schedule | As required |
| Length | Random, Fixed or Customized |
| Finish | Annealed, Pickled, Bright Annealed, Polished or As required |
| Form | Round Tube |
Stainless Steel 904L Seamless Tube Size Chart
Stainless Steel 904L Seamless Tubes are available in a range of outside diameters and wall thicknesses. Standard and custom dimensions can be supplied according to pressure, temperature and process requirements.
| Tube Size | Outside Diameter (mm) | Wall Thickness | Length |
|---|---|---|---|
| 1/2" | 12.70 | As required | As required |
| 3/4" | 19.05 | As required | As required |
| 1" | 25.40 | As required | As required |
| 1-1/2" | 38.10 | As required | As required |
| 2" | 50.80 | As required | As required |
| 3" | 76.20 | As required | As required |
| 4" | 101.60 | As required | As required |
| 6" | 152.40 | As required | As required |
| 8" | 203.20 | As required | As required |
Stainless Steel 904L Seamless Tube Standards
The applicable specification depends on the intended service, tube dimensions and manufacturing requirements. Common standards for Stainless Steel 904L seamless tubing include:
| Standard | Application / Product Requirement |
|---|---|
| ASTM A213 | Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes |
| ASTM A269 | Seamless and welded austenitic stainless steel tubing for general corrosion-resisting service |
| ASTM B677 | Seamless nickel-iron-chromium-molybdenum-copper alloy tubes for corrosion-resistant service |
| ASME SA213 | Applicable seamless alloy and austenitic stainless steel tubing requirements |
| ASME SA269 | Applicable austenitic stainless steel tubing requirements for general service |
Stainless Steel 904L Seamless Tube Features
904L is selected where ordinary stainless steel tubing may not offer sufficient resistance to aggressive chemical and chloride-containing environments.
- Excellent resistance to aggressive chemical environments
- High resistance to sulfuric and phosphoric acids
- Excellent resistance to pitting and crevice corrosion
- Good resistance to stress corrosion cracking
- High nickel and molybdenum content
- Copper addition improves resistance to reducing acids
- Low carbon content
- Good weldability and fabrication characteristics
- Excellent resistance to chloride-containing environments
- Suitable for demanding corrosion-resistant applications
Stainless Steel 904L Chemical Composition
The high-alloy chemistry of 904L is responsible for its enhanced corrosion resistance. Nickel, molybdenum and copper work together with chromium to improve performance in aggressive chemical environments.
| Element | Composition (%) |
|---|---|
| Chromium | 19.0 - 23.0 |
| Nickel | 23.0 - 28.0 |
| Molybdenum | 4.0 - 5.0 |
| Copper | 1.0 - 2.0 |
| Carbon | 0.020 max. |
| Manganese | 2.00 max. |
| Silicon | 1.00 max. |
| Phosphorus | 0.045 max. |
| Sulfur | 0.035 max. |
| Iron | Balance |
Stainless Steel 904L Mechanical Properties
The mechanical performance of 904L seamless tubing depends on the applicable specification, dimensions and material condition. Typical minimum requirements include:
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 490 MPa min. |
| Yield Strength | 220 MPa min. |
| Elongation | 35% min. |
| Density | Approx. 8.0 g/cm³ |
Note: Final mechanical values should be verified against the applicable material specification and material test certificate supplied with the tubes.
Stainless Steel 904L Seamless Tube Applications
The high corrosion resistance of Stainless Steel 904L makes its seamless tubes suitable for fluid handling and process equipment exposed to aggressive chemicals and corrosive media.
Chemical Processing
Used in process systems handling aggressive acids and corrosive chemical solutions.
Petrochemical Plants
Used in selected process and fluid-handling equipment exposed to corrosive media.
Pharmaceutical Equipment
Used in corrosion-resistant process and fluid-handling systems.
Marine Systems
Used in selected equipment exposed to seawater and chloride-containing environments.
Heat Exchangers
Used in heat-transfer systems where resistance to corrosive process fluids is required.
Acid Handling Systems
Used for transferring and processing aggressive acids and corrosive chemical media.
Industries Using Stainless Steel 904L Seamless Tubes
904L seamless tubing is used across industries where high corrosion resistance and dependable performance in aggressive environments are essential.
Chemical Industry
Process equipment and fluid systems handling corrosive chemicals and acids.
Petrochemical Industry
Corrosion-resistant tubing for selected process and handling applications.
Pharmaceutical Industry
Used in process equipment requiring clean and corrosion-resistant tubing.
Marine Industry
Selected marine systems exposed to seawater and chloride-containing media.
Pollution Control Industry
Equipment exposed to corrosive gases, liquids and chemical process streams.
Engineering Industry
Specialized tubular systems requiring high resistance to aggressive service environments.
Frequently Asked Questions
Stainless Steel 904L Seamless Tubes are high-alloy austenitic stainless steel tubes manufactured from Stainless Steel 904L (UNS N08904 / WNR 1.4539). They provide exceptional corrosion resistance in aggressive chemical, acidic, and chloride-containing environments.
Our Stainless Steel 904L Seamless Tubes are manufactured according to ASTM A213, ASTM A269, ASTM B677, ASME SA213, and ASME SA269 international standards.
SS 904L Seamless Tubes offer exceptional resistance to sulfuric acid, phosphoric acid, pitting, crevice corrosion, stress corrosion cracking, and seawater corrosion while maintaining excellent weldability and mechanical strength.
They are widely used in chemical processing plants, fertilizer industries, offshore platforms, desalination plants, marine engineering, pharmaceutical industries, heat exchangers, condensers, and petrochemical facilities.
SS 904L Seamless Tubes are available in various outside diameters, wall thicknesses, schedules, surface finishes, and custom cut lengths to meet diverse industrial requirements.
Each tube undergoes Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Flattening Test, Flaring Test, Corrosion Resistance Testing, and Dimensional Inspection.
SS 904L contains significantly higher levels of nickel, molybdenum, and copper than SS 316L, providing superior resistance to strong acids, chloride-induced pitting, crevice corrosion, and stress corrosion cracking.
Yes. Every shipment includes EN 10204 3.1 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels exports Stainless Steel 904L Seamless Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 904L Seamless Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical corrosion-resistant industrial applications.