2205 Duplex Stainless Steel Coil Hot Rolled No.1 Finish 4.0mm-8.0mm 1500mm Wide for Pressure Vessel Fabrication
2205 Duplex Stainless Steel Coil - High Strength No.1 Finish
Our 2205 duplex stainless steel coil combines the best properties of austenitic and ferritic stainless steels, offering twice the yield strength of conventional 304/316 grades (≥450 MPa vs ≥205 MPa). With approximately 50% austenite and 50% ferrite microstructure, this material delivers an unmatched combination of strength and corrosion resistance. The hot rolled No.1 finish is ideal for heavy industrial applications including pressure vessels, chemical storage tanks, and offshore structural components. This product is in strong demand from Middle Eastern oil & gas, European chemical, and Southeast Asian marine engineering sectors.
Key Features
- Double the Strength: Yield strength ≥450 MPa allows thinner wall sections, reducing weight and material cost in pressure vessel design
- Superior Chloride SCC Resistance: Duplex microstructure provides outstanding resistance to chloride stress corrosion cracking, a common failure mode of 304/316
- Excellent Pitting Resistance: PREN ≥34 (comparable to 904L) ensures reliable service in chloride-rich and sour service environments
- Good Weldability: Can be welded using standard procedures with appropriate filler metals; controlled heat input required
- Cost-Effective High Performance: Higher strength allows material down-gauging, offsetting the higher per-ton cost in many applications
Technical Specifications
| Grade | 2205 (UNS S32205/S31803 / EN 1.4462) |
| Standard | ASTM A240/A240M, NORSOK M-650 |
| Thickness Range | 4.0mm - 8.0mm |
| Width Range | 1500mm, 2000mm |
| Surface Finish | No.1 (Hot Rolled, Annealed & Pickled) |
| Coil ID | 610mm |
| Yield Strength | ≥450 MPa |
| Tensile Strength | ≥620 MPa |
| PREN | ≥34 |
| Chemical Composition | C≤0.03%, Cr 22-23%, Ni 4.5-6.5%, Mo 3-3.5%, N 0.14-0.20%, Mn≤2.0% |
Target Markets & Applications
- Middle East: Oil & gas pressure vessels, sour service piping, offshore platform structural components
- Europe: Chemical storage tanks, pulp and paper digesters, desalination evaporators
- Southeast Asia: Marine propeller shafts, seawater pump components, subsea manifold systems
- Biodiesel reactors, flue gas desulfurization, acetic acid storage
Packaging & Delivery
Heavy-gauge coils coated with anti-rust oil, wrapped in VCI paper, secured with multiple steel strips, and placed on reinforced fumigated wooden pallets. NORSOK M-650 qualification certificates and MTC EN 10204 3.1 provided. Custom slitting to width available.
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