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Stainless Steel 904L Pipes & Tubes Stockist & Supplier in India
Operating severe chemical environment equipment handling warm sulfuric acid and concentrated chlorides requires high-nickel super-austenitic alloys engineered for pitting protection. As a premier Stainless Steel 904L Pipes & Tubes Stockist in India, Steel Emporium provides precision-engineered Stainless Steel 904L Pipes and Stainless Steel 904L Tubes certified for severe acidic service.
To fulfill urgent project schedules, we supply ready-to-ship SS 904L Pipes and SS 904L Tubes in seamless, ERW, and EFW formats. Backed by 25+ years of ISO 9001:2015 expertise, our stock complies with ASTM B677, A312, and A213 standards with 100% MTC certification. For high-heat applications, explore our Stainless Steel 347 Pipes & Tubes range.
Jump To Section: Material Specs | Key Advantages | Size Chart | FAQs
ASTM B677 / A312 / A213 SS 904L Technical Specifications
Our processing facilities deliver precision cold drawing, bright annealing, custom length cutting, and surface polishing across all UNS N08904 grade variants.
| Technical Parameter | Specification Scope & Manufacturing Capabilities |
|---|---|
| Governing Specifications | ASTM B677, ASTM A312, ASTM A213, ASTM A269, ASTM A249, ASME SB677, ASME SA312, DIN, EN, JIS |
| Grade Variants | Stainless Steel 904L (UNS N08904 / WERKSTOFF NR. 1.4539) |
| Manufacturing Types | Seamless, Welded, ERW, EFW, Cold Drawn (CDW), Hot Finished |
| Profile Configurations | Round, Square, Rectangular, Hydraulic, Custom Shapes |
| Outside Diameter (OD) Scope | Seamless: 6 mm to 114.3 mm OD | Welded / ERW: 10 mm to 114.3 mm OD (1/2" to 24" Nominal) |
| Schedule Wall Thickness Range | SCH 5S, SCH 10S, SCH 20, SCH 30, SCH 40S, STD, SCH 80S, SCH 120, SCH 160, XXS |
| Length & End Treatments | 1m to 12.5m, Custom Cut | Plain, Beveled, Threaded Ends |
| Surface Finish & Coatings | AP (Annealed & Pickled), BA (Bright Annealed), 180–400 Grit Polish, Electropolished |
Key Advantages of Stainless Steel 904L Pipes & Tubes
Resists Strong Acids
Added copper allows the metal to handle harsh acids, especially sulfuric acid, without corroding or wearing down easily.
Fights Rust and Pitting
High levels of molybdenum and chromium shield the pipes from deep pitting and hole formation caused by salty or chlorinated water.
Prevents Stress Cracking
High nickel content keeps the metal strong and stops it from cracking under pressure in tough marine or chemical setups.
Weld-Friendly Design
Ultra-low carbon prevents weakening at the weld seams, so the pipes stay fully corrosion-resistant after being joined together.
Tough and Non-Magnetic
Maintains its high strength, flexibility, and non-magnetic nature across extreme warm or freezing temperatures.
Chemical, Mechanical & Equivalent Specifications
| Element / Parameter | SS 904L (UNS N08904) |
|---|---|
| Carbon (C) | 0.020% Max |
| Manganese (Mn) | 2.00% Max |
| Silicon (Si) | 1.00% Max |
| Phosphorus (P) | 0.040% Max |
| Sulfur (S) | 0.030% Max |
| Chromium (Cr) | 19.00% – 23.00% |
| Nickel (Ni) | 23.00% – 28.00% |
| Molybdenum (Mo) | 4.00% – 5.00% |
| Copper (Cu) | 1.00% – 2.00% |
| Nitrogen (N) | 0.10% – 0.25% |
| Mechanical Property | SS 904L |
|---|---|
| Tensile Strength (MPa min / Psi min) | 490 MPa / 71,000 Psi |
| Yield Strength (0.2% Proof MPa min / Psi min) | 220 MPa / 32,000 Psi |
| Elongation (% in 50 mm min) | 35% |
| Hardness (Brinell Max) | 200 HB |
| Hardness (Rockwell B Typical) | 70–90 HRB |
| Standard / Grade | WERKSTOFF NR. | UNS Number | EN Standard | JIS (Japan) |
|---|---|---|---|---|
| SS 904L | 1.4539 | UNS N08904 | X1NiCrMoCu25-20-5 | SUS 904L |
Stainless Steel 904L Series Size & Schedule Chart
| Nominal Size (NB) | SCH 5S / 10S Wall | SCH 40S Wall | SCH 80S / 160 Wall |
|---|---|---|---|
| 1/2" NB (21.34 mm OD) | 1.65 mm / 2.11 mm | 2.77 mm | 3.73 mm / 4.78 mm |
| 3/4" NB (26.67 mm OD) | 1.65 mm / 2.11 mm | 2.87 mm | 3.91 mm / 5.56 mm |
| 1" NB (33.40 mm OD) | 1.65 mm / 2.77 mm | 3.38 mm | 4.55 mm / 6.35 mm |
| 1-1/2" NB (48.26 mm OD) | 1.65 mm / 2.77 mm | 3.68 mm | 5.08 mm / 7.14 mm |
| 2" NB (60.32 mm OD) | 1.65 mm / 2.77 mm | 3.91 mm | 5.54 mm / 8.74 mm |
| 3" NB (88.90 mm OD) | 2.05 mm / 3.05 mm | 5.49 mm | 7.62 mm / 11.13 mm |
| 4" NB (114.30 mm OD) | 2.11 mm / 3.05 mm | 6.02 mm | 8.56 mm / 13.49 mm |
| 6" NB (168.28 mm OD) | 2.77 mm / 3.40 mm | 7.11 mm | 9.52 mm / 18.26 mm |
Industrial Applications of SS 904L
The UNS N08904 high-alloy combination provides crucial acid resistance across aggressive processing facilities.
Phosphoric & Sulfuric Acid Production
Pickling tank heat exchangers, fertilizer reactor lines, and acid concentration piping systems.
Seawater Cooling & Off-Shore Equipment
Marine condenser tubes, desalination plant headers, and offshore platform piping handling high-salinity media.
Flue Gas Desulfurization (FGD) Plants
Scrubber units, absorber towers, and ductwork exposed to aggressive sulfur dioxide condensate.
Pulp & Paper Bleach Plants
Bleaching equipment, washing drums, and piping circuits subjected to aggressive chlorine compounds.
Specialty Chemical Processing
Organic acid distillation columns, pharmaceutical processing vessels, and complex acid-handling headers.
Quality Assurance, MTC Certification & Testing Standards
Every shipment processed by Steel Emporium undergoes verification under our ISO 9001:2015 & PED 2014/68/EU Quality Policy to guarantee compliance.
| Certification / Standard | Compliance & Testing Scope |
|---|---|
| ISO 9001:2015 & Pressure Scope | Certified QMS with PED 2014/68/EU and AD 2000 Merkblatt approvals. |
| EN 10204 3.1 & 3.2 MTC | Official test reports covering heat numbers, chemical composition, and factory origin tracking. |
| PMI & Lab Verification | 100% XRF spectro testing and NABL-accredited laboratory inspections. |
| Mechanical & Weld NDT | Hydrostatic, eddy current, and flaring tests guarantee 100% seam integrity. |
| Third-Party Inspection (TPI) | Inspection-ready for SGS, TUV, Bureau Veritas, or Lloyds. |
| Registered Corporate Office | 102, Durga Devi Street, Mumbai - 400004, Maharashtra, India |
| Central Warehouse & Stockyard | Plot 943, Kalamboli Steel Market, Navi Mumbai - 410218, Maharashtra, India |
Frequently Asked Questions
Request a Technical Sourcing Quote
Ready to source high-performance 904L stainless steel piping for your project? Connect with our technical sales specialists today for competitive factory wholesale pricing, MTC documentation, and global export shipping schedules.