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Girgaon, Mumbai - 400004
Stainless Steel 904L Welded Tubes Manufacturer in India
What Are Stainless Steel 904L Welded Tubes?
Stainless Steel 904L Welded Tubes are high-alloy austenitic stainless steel tubes developed for applications requiring excellent corrosion resistance in aggressive environments. Grade 904L, identified by UNS N08904, contains chromium, nickel, molybdenum and a significant amount of copper, providing enhanced resistance to sulfuric acid, phosphoric acid and other corrosive media.
The high nickel and molybdenum content of Stainless Steel 904L contributes to its resistance against pitting, crevice corrosion and stress corrosion cracking. Its low carbon content also helps reduce the risk of sensitization during welding and fabrication, making the grade suitable for demanding welded tube applications.
Stainless Steel 904L Welded Tubes can be supplied according to applicable ASTM and ASME specifications, depending on product form, dimensions and service requirements. These tubes are available in different outside diameters, wall thicknesses, lengths and finishes to meet specific industrial requirements.
Stainless Steel 904L Welded Tubes are commonly used in chemical processing, pharmaceutical equipment, pollution control systems, marine applications, heat exchangers and acid handling equipment. Their combination of corrosion resistance, durability and fabrication performance makes them suitable for highly corrosive service conditions.
Kamal Steels is a reliable Stainless Steel 904L Welded Tubes Manufacturer and Stockist in India, supplying tubes in different sizes, wall thicknesses, lengths and finishes. We cater to domestic and international requirements with suitable MTC, inspection documentation and export packaging.
Table of Contents
- Stainless Steel 904L Welded Tube Specifications
- Stainless Steel 904L Welded Tube Size Chart
- Stainless Steel 904L Welded Tube Standards
- Stainless Steel 904L Welded Tube Features
- Stainless Steel 904L Chemical Composition
- Stainless Steel 904L Mechanical Properties
- Stainless Steel 904L Welded Tube Applications
- Industries Using Stainless Steel 904L Welded Tubes
- Frequently Asked Questions
Stainless Steel 904L Welded Tube Specifications
Stainless Steel 904L Welded Tubes are supplied in different dimensions and material conditions according to applicable standards and customer requirements.
| Specification | Stainless Steel 904L Welded Tubes |
|---|---|
| Material | Stainless Steel |
| Grade | 904L |
| UNS | N08904 |
| Tube Type | Welded |
| ASTM Standard | ASTM A249 / Applicable ASTM Specification |
| ASME Standard | ASME SA249 / Applicable ASME Specification |
| Outside Diameter | As per requirement |
| Wall Thickness | As per requirement |
| Schedule | As required |
| Length | Random, Fixed or Customized |
| Finish | Annealed, Pickled, Polished or As required |
Stainless Steel 904L Welded Tube Size Chart
Stainless Steel 904L Welded Tubes are available in various outside diameters and wall thicknesses for corrosive process and industrial applications. Customized dimensions and lengths can also be supplied according to project 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 Welded Tube Standards
Stainless Steel 904L Welded Tubes can be supplied according to applicable ASTM and ASME requirements based on product form, dimensions and service conditions.
| Standard | Application / Product Requirement |
|---|---|
| ASTM A249 | Welded austenitic stainless steel tubes for heat exchangers, boilers and condensers |
| ASTM A269 | Seamless and welded austenitic stainless steel tubing for general corrosion-resisting service |
| ASME SA249 | Applicable welded austenitic stainless steel tubing requirements |
| ASME SA269 | Applicable austenitic stainless steel tubing requirements for general service |
Stainless Steel 904L Welded Tube Features
Stainless Steel 904L is a high-alloy austenitic stainless steel grade designed for severe corrosive environments where conventional stainless steel grades may not provide sufficient resistance.
- Excellent resistance to general corrosion
- High resistance to pitting and crevice corrosion
- Good resistance to stress corrosion cracking
- Excellent resistance to sulfuric acid
- Good resistance to phosphoric acid
- High nickel and molybdenum content
- Low carbon content for improved weldability
- Good resistance to chloride-containing environments
- Good fabrication characteristics
- Available in different sizes, wall thicknesses and finishes
Stainless Steel 904L Chemical Composition
The chemical composition of Stainless Steel 904L includes elevated chromium, nickel and molybdenum levels along with copper. These alloying elements contribute to its resistance to 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
Stainless Steel 904L provides a combination of strength, ductility and excellent corrosion resistance. Mechanical requirements depend on product dimensions, material condition and applicable specification.
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 490 MPa min. |
| Yield Strength | 220 MPa min. |
| Elongation | 35% min. |
| Density | Approx. 8.0 g/cm³ |
Note: Mechanical properties may vary according to product form, dimensions, heat treatment and applicable specification. Final values should be confirmed from the relevant material test certificate.
Stainless Steel 904L Welded Tube Applications
Stainless Steel 904L Welded Tubes are selected for applications requiring high corrosion resistance in aggressive chemical, marine and process environments.
Chemical Processing
Used in equipment handling aggressive acids and corrosive process media.
Heat Exchangers
Used in heat-transfer equipment exposed to corrosive process fluids.
Pharmaceutical Equipment
Used in selected process and fluid-handling systems requiring corrosion-resistant tubing.
Pollution Control
Used in equipment exposed to corrosive gases, liquids and chemical solutions.
Marine Equipment
Used in selected marine systems requiring enhanced resistance to aggressive environments.
Acid Handling Equipment
Used in systems designed for handling sulfuric acid, phosphoric acid and other corrosive media.
Industries Using Stainless Steel 904L Welded Tubes
Stainless Steel 904L Welded Tubes are supplied to industries where resistance to aggressive chemicals, acids and chloride-containing environments is required.
Chemical Industry
Used in chemical processing equipment and corrosive fluid-handling systems.
Pharmaceutical Industry
Used in selected process equipment requiring corrosion-resistant stainless steel tubing.
Marine Industry
Used in selected marine equipment exposed to aggressive environments.
Petrochemical Industry
Used in process systems requiring resistance to corrosive chemicals and fluids.
Pollution Control Industry
Used in scrubbers and other equipment exposed to corrosive process streams.
Engineering Industry
Used in fabricated equipment and tubular systems designed for severe corrosive service.
Frequently Asked Questions
Stainless Steel 904L Welded Tubes are low-carbon, high-alloy austenitic stainless steel tubes designed for highly corrosive environments requiring exceptional resistance to aggressive acids, chlorides, and seawater.
Our Stainless Steel 904L Welded Tubes are manufactured according to ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, and ASME SA269 standards.
These welded tubes provide exceptional corrosion resistance, excellent protection against pitting and crevice corrosion, outstanding resistance to stress corrosion cracking, superior weldability, and long service life in aggressive chemical environments.
They are widely used in chemical processing plants, offshore platforms, marine industries, desalination plants, pharmaceutical manufacturing, fertilizer plants, pollution control equipment, heat exchangers, and process piping systems.
The high nickel, molybdenum, and copper content provides exceptional resistance to sulfuric acid, phosphoric acid, chloride attack, pitting, crevice corrosion, and stress corrosion cracking, making it suitable for severe corrosion environments.
Each tube undergoes PMI Testing, Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Dimensional Inspection, Surface Finish Inspection, and Visual Inspection.
Yes. Every shipment includes EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels supplies Stainless Steel 904L Welded Tubes in various diameters, wall thicknesses, surface finishes, standard lengths, and custom-cut lengths according to customer specifications.
Yes. We export Stainless Steel 904L Welded Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 904L Welded 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.