904L Stainless Steel Coil Cold Rolled 2B Super Austenitic Grade 0.5mm-3.0mm 1500mm Wide for Chemical Processing Use
904L Stainless Steel Coil - Super Austenitic Grade 2B Finish
Our 904L stainless steel coil is a premium super austenitic stainless steel with high alloy content including nickel (23-28%), chromium (19-23%), molybdenum (4-5%), and copper (1-2%). This unique composition delivers outstanding corrosion resistance in aggressive acid environments, outperforming standard 316L in reducing acids like sulfuric, phosphoric, and acetic acid. With PREN ≥ 34, it provides excellent resistance to pitting and stress corrosion cracking. This product is the material of choice for European chemical plants, Middle Eastern petrochemical facilities, and global pharmaceutical manufacturers.
Key Features
- Superior Acid Resistance: High Ni-Cr-Mo-Cu alloy system delivers exceptional corrosion resistance in sulfuric, phosphoric, and acetic acid environments
- Chloride Stress Corrosion Cracking Resistance: High nickel content provides outstanding resistance to SCC in chloride-bearing environments
- Pitting and Crevice Corrosion Resistance: PREN ≥ 34 ensures reliable performance where standard 316L (PREN ~24) would fail
- Good Weldability: Can be welded using matching over-alloyed filler metals for equivalent corrosion resistance in weld zones
- Excellent Formability: Austenitic structure provides good ductility for forming complex chemical equipment components
Technical Specifications
| Grade | 904L (UNS N08904 / EN 1.4539) |
| Standard | ASTM A240/A240M |
| Thickness Range | 0.5mm - 3.0mm |
| Width | 1500mm (custom available) |
| Surface Finish | 2B (Cold Rolled, Annealed & Pickled) |
| Coil ID | 610mm |
| PREN | ≥34 (PREN = %Cr + 3.3*%Mo + 16*%N) |
| Chemical Composition | C≤0.02%, Cr 19-23%, Ni 23-28%, Mo 4-5%, Cu 1-2%, Mn≤2.0% |
Target Markets & Applications
- Europe: Sulfuric acid production plants, phosphoric acid handling, API pharmaceutical equipment
- Middle East: Petrochemical processing, sour gas handling (NACE MR0175 compliant), desalination
- Global: Seawater cooling systems, bleach plant equipment, flue gas desulfurization
- Pickling plant components, acetic acid storage, food processing in aggressive media
Packaging & Delivery
Premium packaging: PE film + VCI anti-rust paper, steel strip banding, fumigated wooden crate (not pallet) with desiccant packs for maximum protection. MTC EN 10204 3.1 and NACE compliance certificates provided. Full traceability from melt to delivery.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.