Stainless Steel 904L Sheets & Plates — Verified Manufacturer & Exporter from Mumbai
Jade Alloys is ISO 9001 certified manufacturer, stockist and exporter of Stainless Steel 904L Sheets & Plates from ready-stock facility in Mumbai, India to industries of 50+ countries. We can provide material to ASTM A240, ASME SA240 and ASTM B625 standards in various thickness, width, surface and product forms.
Stainless Steel 904L (UNS N08904 / WNR 1.4539) is a low-carbon, superaustenitic stainless steel designed to provide outstanding corrosion resistance in extremely corrosive applications. The alloy composition contains a higher percentage of nickel (23 – 28%), chromium (19 – 23%), molybdenum (4 – 5%) and copper (1 – 2%) which makes it one of the most corrosion resistant grades in the commercial stainless steel range. This grade was originally designed to accommodate the use as dilutions for concentrated sulfuric acid, and has also been seen to be equally effective in hot phosphoric acid, seawater and most organic acid conditions.
When SS 316L and 317L fail under certain conditions, 904L remains unaffected and it is an extremely resistant material to pitting, crevice corrosion, and chlorides induced stress corrosion cracking, yet still retains easy forming, weldability and is non-magnetic. These are all ready stock and can be dispatched the same week for 904L Cold Rolled Sheets, Hot Rolled Plates, Chequered Plates, Shim Sheets, Perforated Sheets, Coils, Strips and Foils with EN 10204 3.1 Mill Test Certificates.
Stainless Steel 904L Sheets & Plates Specifications
| Property | Detail |
|---|---|
| Standards | ASTM A240 / ASME SA240 / ASTM B625 / ASME SB625 / ASTM B677 / ASTM A480 |
| UNS Number | N08904 |
| Werkstoff Nr. | 1.4539 |
| Thickness — Sheets | 0.5 mm to 3.0 mm |
| Thickness — Plates | 4.0 mm to 100 mm |
| Width | 1000 mm, 1219 mm, 1500 mm, 1800 mm, 2000 mm, 2500 mm, 3000 mm, custom |
| Length | 2000 mm, 2440 mm, 3000 mm, 5800 mm, 6000 mm, custom |
| Surface Finishes | 2B, 2D, BA, No.1, No.4, No.8, 8K, Mirror, Hairline, Satin, Brushed, Sand Blast, Chequered, Embossed, Etched |
| Forms Available | Sheets, Plates, Coils, Slitting Coils, Strips, Foils, Shim Sheets, Perforated Sheets, Chequered Plates |
| Production Method | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled |
| HSN Code | 72193390 |
| Max Service Temperature | 450°C (842°F) |
| Hardness | Brinell: 180 HB max | Rockwell B: 70–90 HRB (typical) |
| Cut-to-Size | Yes — Laser Cutting, Waterjet Cutting, Plasma Cutting, Mechanical Cutting available |
904L Stainless Steel Equivalent Standards & Grades
| Standard | UNS | WNR | JIS | AFNOR | EN | BS | KS |
|---|---|---|---|---|---|---|---|
| SS 904L | N08904 | 1.4539 | SUS 904L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 | 904S13 | STS 317J5L |
Chemical Composition of Stainless Steel 904L
| Grade | C (max) | Mn (max) | Si (max) | P (max) | S (max) | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|---|
| SS 904L | 0.020 | 2.00 | 1.00 | 0.040 | 0.030 | 19.0–23.0% | 4.0–5.0% | 23.0–28.0% |
Note — Role of alloying elements: Chromium (19–23%) provides the base oxidation and corrosion resistance. Nickel (23–28%) enhances toughness and resistance to stress corrosion cracking. Molybdenum (4–5%) dramatically improves pitting and crevice corrosion resistance in chloride-containing environments. Copper (1–2%) is specifically added to improve resistance to sulfuric acid — a characteristic that distinguishes 904L from most other stainless grades.
Mechanical Properties of SS 904L Sheets & Plates
| Density (g/cm³) | Melting Point | Tensile Strength | Yield Strength (0.2%) | Elongation (%) |
|---|---|---|---|---|
| 7.95 | 1350–1390°C (2460–2534°F) | 490 MPa (71,000 psi) | 220 MPa (32,000 psi) | 35% min |
Physical Properties of Stainless Steel 904L Plates & Sheets
| Property | Value | Unit |
|---|---|---|
| Density | 7.95 | g/cm³ |
| Melting Range | 1350–1390 | °C |
| Thermal Conductivity (20°C) | 12.0 | W/m·K |
| Electrical Resistivity (20°C) | 0.85 | µΩ·m |
| Specific Heat Capacity (0–100°C) | 500 | J/kg·K |
| Modulus of Elasticity | 190–210 | GPa |
| Mean Thermal Expansion (0–100°C) | 15.0 | µm/m/°C |
| Magnetic Permeability | Non-magnetic (austenitic) | — |
| Maximum Service Temperature | 450°C (842°F) | Continuous service |
Stainless Steel 904L vs 316L vs 317L — Comparison
When to Choose 904L Over 316L or 317L Stainless Steel
| Property | SS 904L | SS 317L | SS 316L |
|---|---|---|---|
| Ni Content | 23–28% | 11–15% | 10–14% |
| Mo Content | 4.0–5.0% | 3.0–4.0% | 2.0–3.0% |
| Cu Content | 1.0–2.0% (key differentiator) | None | None |
| Sulfuric Acid Resistance | Excellent (0–100% conc.) | Moderate | Limited |
| Pitting Resistance (PREN) | ~36 | ~32 | ~26 |
| Chloride SCC Resistance | Good | Fair | Fair |
| Relative Cost | Higher | Moderate | Lower |
| Best For | Sulfuric acid, marine, aggressive chlorides | Moderate acid/chemical service | General corrosive service |
904L is the preferred choice when corrosion media includes dilute sulfuric acid at temperatures up to 35°C across the full concentration range (0–100%), or when the environment involves hot phosphoric acid, seawater service, or elevated chloride concentrations that would cause pitting failures in 316L or 317L. For less demanding environments, 316L or 317L may offer adequate performance at a lower cost.
Available Sizes & Thickness of SS 904L Plates & Sheets
| Thickness (mm) | Width (mm) | Length (mm) | Form |
|---|---|---|---|
| 0.5 – 3.0 | 1000 – 1500 | 2000 – 3000 | Cold Rolled Sheets |
| 4.0 – 12.0 | 1250 – 2000 | 2500 – 6000 | Plates |
| 12.5 – 50.0 | 1500 – 2500 | 3000 – 12000 | Heavy Plates |
| Custom | As required | As required | Cut-to-Size |
Welding, Cutting & Fabrication of 904L Sheets and Plates
Welding Methods for Stainless Steel 904L
SS 904L can be readily welded using all standard shop fabrication methods. Its low carbon content minimizes the risk of sensitization and intergranular corrosion in the heat-affected zone. Matching or overalloyed filler materials are recommended to maintain corrosion resistance in the weld zone.
| Method | Abbreviation | Notes |
|---|---|---|
| Gas Tungsten Arc Welding | GTAW (TIG) | Preferred for precision welds and thin sheets |
| Gas Metal Arc Welding | GMAW (MIG) | Suitable for thicker plates, higher deposition rate |
| Shielded Metal Arc Welding | SMAW | Field repairs and where wire feed isn’t practical |
| Submerged Arc Welding | SAW | Heavy plate fabrication in controlled environments |
| Plasma Arc Welding | PAW | High-precision applications, keyhole technique |
Cutting Methods Available for 904L Plates
| Cutting Method | Suitable Thickness | Notes |
|---|---|---|
| Laser Cutting | Up to 25 mm | High precision, clean edge, minimal HAZ |
| Waterjet Cutting | Up to 100 mm | No heat input — ideal for corrosion-critical parts |
| Plasma Cutting | 4 – 80 mm | Fast, cost-effective for large plates |
| Mechanical (Shear) | Up to 12 mm | Straight cuts, high volume, economical |
Testing & Quality Control of SS 904L Sheets and Plates
Every batch of Stainless Steel 904L Sheets and Plates supplied by Jade Alloys is subject to rigorous quality checks before dispatch. Material Test Certificates (EN 10204 3.1) are provided as standard, with Third Party Inspection via SGS or Bureau Veritas available on request.
| Test Type | Details |
|---|---|
| Chemical Analysis | Spectro analysis to verify alloy composition against ASTM A240 limits |
| Positive Material Identification (PMI) | XRF-based verification of all UNS N08904 material |
| Mechanical Testing | Tensile strength, yield strength, elongation, and hardness (HRB) |
| Intergranular Corrosion Test | As per ASTM A262 Practice E where specified |
| Dimensional Inspection | Thickness, width, length, flatness, and surface finish verification |
| Ultrasonic Testing (UT) | Available for heavy plates — detects internal defects |
| Third Party Inspection (TPI) | SGS, Bureau Veritas (BV), TÜVIT accepted |
Available Stock of ASTM A240 Stainless Steel 904L Sheets & Plates
Jade Alloys maintains a comprehensive ready stock of Stainless Steel 904L flat products sheets, plates, coils, strips, and speciality forms in Mumbai. All stock is supported by EN 10204 3.1 Mill Test Certificates and can be dispatched within 3 working days. Cut-to-size available on all forms.
- Stainless Steel 904L Shim Sheets
- SS 904L Circles
- 904L Stainless Steel Plain Sheets
- 904L Stainless Steel Foils
- UNS N08904 Polished Plates
- WERKSTOFF NR. 1.4539 Perforated Sheet
- ASTM A240 904L Stainless Steel Sheet
- Stainless Steel 904L Sheet Cut To Size
- Stainless Steel 904L Sheet #4 Finish
- 904L SS Cold Rolled Plates
- ASTM A240 Type 904L Plate 2B Finish
- 904L Stainless Steel Plate Mill Finish
- UNS N08904 Plates
- WERKSTOFF NR. 1.4539 Shim Sheets
- ASTM A240 AISI 904L Coils
- ASTM A240 904L SS Slitting Coil
- Stainless Steel 904L CR Sheet
- Stainless Steel 904L Strips
- 904L Stainless Steel #4 Finish Sheets
- 904L Stainless Steel Foils
- UNS N08904 Sheet Supplier
- WERKSTOFF NR. 1.4539 HR Plates
- 904L Austenitic Stainless Steel Sheet
- SS 904L #8 Finish Plates
- SS 904L Plate Manufacturer
- 904L Stainless Steel Laser Cutting Sheet
- Jindal Stainless Steel 904L Sheets
- 904L Stainless Steel Sheets Distributor
- UNS N08904 Plates Exporter
- WERKSTOFF NR. 1.4539 CR Sheets
- ASTM A240 Type 904L Sheet and Plate
- ASTM A240 904L Stainless Steel Plate
- 1.4539 Stainless Steel Perforated Sheet
- SS 904L 2B Finish Plates Stockist
- AISI 904L Sheets
- Stainless Steel 904L Sheets Price
Stainless Steel 904L’s unique combination of sulfuric acid resistance, chloride tolerance, and mechanical strength makes it the material of choice across several high-demand industries:
- Chemical Processing: Reaction vessels, storage tanks, heat exchangers, and pipework handling sulfuric acid, phosphoric acid, and other aggressive media
- Oil & Gas: Offshore platform components, sour gas handling (NACE MR0175 compliant), subsea equipment, and seawater cooling systems
- Fertilizer Industry: Phosphate fertilizer plants — one of the most demanding environments for 904L due to phosphoric acid exposure
- Pulp & Paper: Digesters, bleach washing equipment, and chlorine dioxide circuits where 316L is inadequate
- Marine & Offshore: Seawater handling, desalination plant components, and marine heat exchangers requiring resistance to warm seawater
- Power Generation: Flue gas desulphurization (FGD) systems, reboilers, and condensers in fossil fuel and nuclear power plants
- Petrochemical: Column internals, process piping, and pressure vessels in refinery environments with mixed acid exposure
- Food Processing: Processing equipment for acidic food products (citric, acetic acid environments) requiring high hygiene and corrosion standards
Applications of Stainless Steel 904L Sheets & Plates
Why Choose Jade Alloys for Stainless Steel 904L Sheets & Plates?
With over 15 years of experience in supplying high-performance alloys globally, Jade Alloys has built a reputation for reliability, technical accuracy, and fast dispatch. Here is what sets us apart:
| Advantage | What It Means for You |
|---|---|
| ISO 9001 Certified | Quality management system ensures consistent product specifications and process control |
| EN 10204 3.1 MTC Standard | Full mill test certificates supplied with every shipment — your compliance documentation is covered |
| NACE MR0175 Compliant Material | Approved for sour service / H2S environments — critical for oil and gas applications |
| Ready Stock in Mumbai | 3-day dispatch on standard sizes — reduce your project lead times significantly |
| TPI via SGS / Bureau Veritas | Independent third-party inspection accepted — your quality assurance team can be involved |
| Cut-to-Size Capability | Laser, waterjet, plasma, and mechanical cutting available — receive material ready for your application |
| Export to 50+ Countries | Experienced in international logistics, documentation (CO, packing list, fumigation), and FOB/CIF pricing |
| Multiple Mill Brands Stocked | Jindal, VDM, Nippon Yakin origin material available — documented in MTC |
Packaging & Export Documentation for 904L Sheets and Plates
Jade Alloys ensures all Stainless Steel 904L Sheets and Plates are packed to prevent damage in transit, whether for domestic delivery or international export:
| Item | Details |
|---|---|
| Sheet/Plate Packaging | Wooden pallets with steel banding, PVC / plastic interleaving to protect surface finish |
| Coil Packaging | Steel eye rings, moisture barrier film, wooden crates for export |
| Small Items (shims, foils) | Bubble wrap, cardboard boxes, carton packaging |
| Export Documents Provided | Commercial Invoice, Packing List, Bill of Lading, Country of Origin Certificate, Fumigation Certificate, EN 10204 3.1 MTC, TPI Report (if requested) |
Frequently Asked Questions — Stainless Steel 904L Sheets & Plates
What is the difference between Stainless Steel 904L and 316L?
What is the maximum service temperature of Stainless Steel 904L?
Is Stainless Steel 904L magnetic?
What is the ASTM standard for 904L Stainless Steel Sheets and Plates?
What is the HSN code for Stainless Steel 904L Sheets?
Does Stainless Steel 904L rust?
What industries use Stainless Steel 904L Sheets and Plates most?
Can 904L Stainless Steel Plates be cut to custom sizes?
What is the price of Stainless Steel 904L Plates per kg?
What certifications does Jade Alloys provide with 904L material?
Countries We Export Stainless Steel 904L Sheets & Plates
From our ready-stock facility in Mumbai, Jade Alloys exports Stainless Steel 904L Sheets and Plates to 50+ countries across the Middle East, Europe, North America, Asia, Africa, and Oceania. We handle all export documentation — Commercial Invoice, Packing List, Bill of Lading, Country of Origin Certificate, and EN 10204 3.1 MTC for seamless, on-time delivery.
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sales@jadealloys.com | +91 9987685906
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