2205 Duplex Stainless Steel Coil China Supplier | Exporter | Manufacturer
Thickness: 0.03-45 mm, or as customers’ demands.
Width：1000/1219/1500/1800/2000, etc. Or as your requirement.
Finish: No.1, 2B, No.4, BA, Embossed, Etch, Mirror, etc.
Manufacturers: TISCO, BAOSTEEL, JISCO, etc.
Types: stainless steel hot rolled coils and cold rolled stainless steel coils, color coated ss coil, etc.
2205 Duplex Stainless Steel (UNS S32205 / S31803) is a two-phase alloy, consisting of approximately equal parts of austenite and ferrite. This dual-phase structure results in superior strength, high resistance to pitting and stress corrosion cracking, and excellent fatigue resistance. Welcome to inquire and contact us today.
Introduction to 2205 Duplex Stainless Steel Coil
UNS S32205/S31803 duplex stainless steel coil delivers 2x the yield strength of standard austenitic steels (e.g., 316L) with exceptional chloride resistance. Designed for aggressive industrial applications, it combines ferritic toughness with austenitic corrosion resistance in a 50/50 phase balance. It is available in cold-rolled or hot-rolled coil forms, ready for processing into strips, sheets, or custom components. Welcome to inquire and ask for the lastest price. While fabrication requires specialized expertise, the long-term savings in maintenance and replacement costs make it a preferred choice for critical infrastructure.
Chemical Composition of 2205 Duplex Stainless Steel
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.03 |
| Nitrogen (N) | 0.14 – 0.20 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.02 |
| Iron (Fe) | Balance |
2205 Duplex Stainless Steel (UNS S32205/S31803) is a high-performance alloy that combines the best features of austenitic and ferritic stainless steels. It offers exceptional strength, superior corrosion resistance, and cost-efficiency, making it ideal for demanding industrial, marine, and chemical applications.
Our 2205 Duplex Stainless Steel Coils are manufactured under strict quality control, ensuring compliance with ASTM A790, ASME SA790, and EN 1.4462 standards.
Physical Properties of 2205 Duplex Stainless Steel
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ |
| Thermal Conductivity | 19 W/m·K (at 100°C) |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity | 85 μΩ·cm |
| Thermal Expansion | 13 μm/m·K |
| Magnetic Properties | Slightly magnetic |
Key Features & Advantages of 2205 Duplex Stainless Steel Coil
Superior Corrosion Resistance
Excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking.
Excellent for Marine Environments
Molybdenum and nitrogen additions ensure high performance in seawater and brine.Good Weldability and Fabrication
Can be welded and formed with standard practices while minimizing intermetallic phase formation.
Industrial Applications of 2205 Stainless Steel Coil
- Oil & Gas: Pipelines, heat exchangers, and offshore platforms.
- Chemical Processing: Pressure vessels, reactors, and storage tanks.
- Marine Engineering: Propellers, ship hulls, and desalination plants.
- Pulp & Paper: Digesters, bleaching equipment, and chip pre-steaming vessels.
- Construction: Bridges, architectural cladding, and reinforcement bars.
| Industry | Typical Uses |
|---|---|
| Oil & Gas | Heat exchangers, pressure vessels, subsea tubing |
| Marine Engineering | Boat components, propeller shafts, exhaust ducts |
| Chemical Processing | Reactors, scrubbers, tanks |
| Pulp & Paper | Digesters, bleach washers, liquor tanks |
| Water Treatment | Desalination equipment, water heaters |
| Structural Engineering | Bridges, reinforcement panels, support frames |
In Conclusion
2205 Duplex Stainless Steel Coil provides a superior combination of mechanical strength, corrosion resistance, and cost efficiency, making it a top choice for industrial applications that demand long-lasting performance in aggressive or corrosive environments.Whether for chemical tanks, marine components, pressure vessels, or structural supports, 2205 Duplex outperforms conventional stainless steels while offering considerable cost savings compared to high-alloy materials.Stainless Steel Market delivers precision-processed 2205 stainless steel coils with global certifications, rapid delivery, and full traceability. We support OEM fabrication, custom sizes, and technical consulting for your project needs.
Why Choose Our 2205 Duplex Coils?
Precision Manufacturing:
Controlled hot rolling at 1100–1200°C with rapid quenching
Solution annealing at 1020–1100°C followed by water quenching
Phase Balance Control: 40–60% austenite (verified by feritscope)
Quality Assurance:
100% PMI (Positive Material Identification) testing
EN 10204 3.2 Certification with traceable heat numbers
NACE MR0175/ISO 15156 compliance for sour service
Value-Added Services:
Precision slitting to ±0.1 mm tolerance
Protective film coating (PE/PP) for transit
Custom annealing/leveling for flatness ≤3mm/m