Superior Corrosion Resistance · High Alloy Content · Aggressive Acid Environment Suitability · Global Supply
904L stainless steel coils are a high-alloy austenitic stainless steel known for their exceptional resistance to corrosion in highly acidic environments. 904L stainless steel contains high amounts of nickel, chromium, and molybdenum, making it particularly resistant to pitting, crevice corrosion, and stress corrosion cracking. It is highly regarded for its ability to withstand aggressive environments, including those that involve sulfuric acid, phosphoric acid, and other corrosive chemicals. These coils are widely used in industries such as chemical processing, marine applications, and oil and gas sectors, where excellent resistance to corrosion and high-temperature stability are critical.
904L stainless steel coils work by forming a passive chromium oxide layer on the surface when exposed to oxygen, which prevents corrosion. The high nickel content in 904L enhances its ability to resist oxidation, while the molybdenum content improves its resistance to pitting and crevice corrosion in chloride-rich environments.
Key alloying elements that contribute to the exceptional performance of 904L grade.
ASTM A240 · ASME SA240 · UNS N08904 · EN 1.4539
| Specification | Details |
|---|---|
| ASTM / ASME | ASTM A240 / ASME SA240 (Plate, Sheet, Strip, and Coils) |
| UNS | UNS N08904 |
| EN | 1.4539 or X1NiCrMoCu25-20-5 |
| DIN | 1.4539 or X1NiCrMoCu25-20-5 |
| ISO | ISO 904L |
| JIS | SUS 890L (approx.) |
| Product Form | Coils / Sheets / Plates |
| Thickness Range | 0.5 mm to 100 mm |
| Standard Widths | 1000, 1219, 1250, 1500, 1800, 2000, 2500, 3000, 3500 mm, etc |
| Standard Lengths | 2000, 2440, 2500, 3000, 5800, 6000 mm, etc |
| Custom Cuts | Custom Width and Length cuts available as per requirement |
| Surface Finish | Hot Rolled (HR), Cold Rolled (CR), Annealed & Pickled (AP) |
| Supply Condition | Solution Annealed |
| Packaging | Bundled, Wooden Plates, Bubble wraps, Customized |
Precision slitting coils, perforated coils, and thin foils from 0.05 mm available.
Precision sheets, heavy plates, and shim sheets maintained in ready stock.
Circles, rings, and custom-cut blanks tailored to your project requirements.
Mill edge, slit edge, round edge, and square edge conditions available for all coils.
19.0–23.0% — Crucial for oxidation protection and corrosion resistance.
23.0–28.0% — Enhances toughness and strength in aggressive media.
4.0–5.0% — Improves resistance to pitting and crevice corrosion.
1.0–2.0% — Adds resistance to reducing acids like sulfuric acid.
490–710 MPa — High ultimate tensile strength for structural reliability.
≥ 220 MPa — Strong load-bearing capacity for industrial components.
≥ 35% — Excellent ductility for complex forming and fabrication.
≤ 150-220 HB — Optimized Brinell hardness for durability and machinability.
Available in multiple finishes and grades for diverse engineering needs.
Percentage breakdown of alloying elements for high corrosion resistance.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.02 |
| Chromium (Cr) | 19.0 – 23.0 |
| Nickel (Ni) | 23.0 – 28.0 |
| Molybdenum (Mo) | 4.0 – 5.0 |
| Copper (Cu) | 1.0 – 2.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.035 |
| Iron (Fe) | Balance |
Cross-reference table for international designations of 904L grade coils.
| Standard / System | Grade / Designation |
|---|---|
| UNS (Unified Numbering System) | N08904 |
| EN (European Standard) | 1.4539 |
| AISI / ASTM | 904L |
| DIN (Germany) | 1.4539 |
| ISO | ISO 904L |
| JIS (Japan) | SUS 890L (approx.) |
| BS (British Standard) | 904S13 |
| GOST (Russia) | 06Cr20Ni25Mo5Cu2 |
| SS (Sweden) | 2562 |
HRS Ferritic is a leading and trusted 904L stainless steel Coils Supplier, Stockist, and Importer in India. We offer high-quality coils sourced from globally certified manufacturers, ensuring each product meets international standards for corrosion resistance and durability.
Quick answers to common queries about 904L Stainless Steel Coils.