High Quality Duplex Steel Sheets & Plates
S31803 / S32205 • Formable • Ductile • Machinable
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S31803/S32205 DUPLEX STEEL SHEETS AND PLATES EQUIVALENT GRADES
| STANDARD | UNS | WERKSTOFF NR. | EN |
|---|---|---|---|
| Duplex S31803 / S32205 | S31803 / S32205 | 1.4462 | X2CrNiMoN22-5-3 |
SPECIFICATION OF DUPLEX STEEL S31803/S32205 SHEETS AND PLATES
| Standard | ASTM A240 / ASME SA240 |
|---|---|
| Dimension Standard | JIS, AISI, ASTM, GB, DIN, EN, etc |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Thickness | 0.3 mm to 120 mm |
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
| Surface Finishing | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, Chequered, embossed, hair line, sand blast, Brush, etching, SATIN (Met with Plastic Coated) etc. |
CHEMICAL COMPOSITION OF DUPLEX STEEL S31803/S32205 SHEETS AND PLATES
| Grade | Common Name | C% | Mn% | Si% | P% | S% | Cr% | Ni% | Mo% | N% |
|---|---|---|---|---|---|---|---|---|---|---|
| 2205 | S31803 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| 2205 | S32205 | 0.030 | 2.00 | 1.00 | 0.030 | 0.020 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 |
MECHANICAL PROPERTIES OF DUPLEX STEEL S31803/S32205 SHEETS AND PLATES
| Tensile Strength | Yield Strength | Density | Elastic Modulus |
|---|---|---|---|
| 620 MPa min | 450 MPa min | 7,805 kg/m³ | 200 GPa |
The materials we supply undergo a comprehensive range of quality assurance procedures, including eddy current testing, hydrostatic testing, ultrasonic examination, and other essential NDT methods, along with detailed chemical and mechanical property evaluations. Each product is thoroughly inspected at multiple stages of manufacturing to ensure it is free from defects and suitable for demanding industrial applications. Our rigorous testing standards guarantee consistent quality and reliability. In addition, all products are manufactured in accordance with relevant industry norms and specifications, making them fully compliant and widely accepted in both domestic and international markets.
💡 Practical Difference in Use
Use Duplex Steel S31803 Sheets & Plates when: excellent corrosion resistance, good strength, and resistance to chloride-induced stress corrosion cracking are required at a cost-effective level.
→ Example: fabricated chemical processing equipment, heat exchanger plates, storage tanks, and ducting systems.
Use Duplex Steel S32205 Sheets & Plates when: higher tensile strength, superior pitting resistance, and enhanced performance in aggressive marine and offshore environments are needed. → Example: fabricated offshore structures, pressure vessels, tank shells, and seawater handling equipment.
Applications of Duplex Steel S31803 & S32205 Sheets and Plates
Duplex S31803 and S32205 sheets and plates are widely used as fabrication materials for equipment operating in corrosive and mechanically demanding environments.
- Chemical & Process Industries: Used for fabricating reactors, heat exchanger plates, and processing vessels exposed to corrosive chemicals.
- Offshore & Marine Structures: S32205 plates are preferred for fabricating decks, platforms, and seawater exposure zones.
- Pressure Vessels & Tanks: Both grades offer excellent strength-to-weight ratio for fabricated pressure and storage equipment.
When to Choose Duplex S31803 vs. Duplex S32205?
The selection of sheets and plates depends on chloride exposure, structural load, and resistance to localized corrosion.
Choose Duplex S31803 Sheets & Plates when:
- Moderate chloride exposure is present
- Good corrosion resistance with lower cost is required
- Standard duplex strength is sufficient for fabrication
- Good weldability and formability are essential
- Used in fabricated chemical, water treatment & storage systems
- Balanced mechanical and corrosion properties are needed
Choose Duplex S32205 Sheets & Plates when:
- Severe chloride or marine environment is involved
- Higher tensile and yield strength are critical for fabrication
- Superior pitting & crevice corrosion resistance is needed
- Used in fabricated offshore oil & gas structures and equipment
- Higher PREN value is required
- Long-term durability in harsh environments is essential
Industries That Use Duplex Steel S31803 & S32205 Sheets and Plates
Duplex S31803 and S32205 sheets and plates are essential fabrication materials across industries requiring structural strength, corrosion resistance, and long-term durability.
Major application area for fabricated Duplex S32205 plates.
Uses
Offshore platforms, pressure vessel shells, deck structures, and skids.
Why Duplex Steel?
Outstanding resistance to chloride corrosion with very high mechanical strength.
Used as base material for fabricating corrosion-resistant equipment.
Uses
Reactors, heat exchanger plates, ducting, and storage tanks.
Why Duplex Steel?
Excellent resistance to acids, chlorides, and stress corrosion cracking.
Extensively used for fabricated ship and marine structural components.
Uses
Hull sections, decks, bulkheads, and seawater systems.
Why Duplex Steel?
Superior pitting resistance and high fatigue strength.
Used as fabrication material for corrosion-resistant water systems.
Uses
Evaporator plates, pressure vessels, pump housings, and pipelines.
Why Duplex Steel?
Exceptional resistance to seawater corrosion and scaling.
Used in fabrication of power plant heat transfer and pressure equipment.
Uses
Heat exchangers, condensers, and pressure piping systems.
Why Duplex Steel?
High strength with excellent resistance to thermal and chemical attack.
Used in fabrication of chemical recovery equipment.
Uses
Digesters, bleaching towers, and chemical storage systems.
Why Duplex Steel?
High resistance to chlorides, acids, and stress corrosion cracking.
Used where hygienic fabrication and corrosion resistance are vital.
Uses
Processing tanks, heat exchanger plates, and sanitary equipment.
Why Duplex Steel?
Excellent cleanability with high corrosion resistance.
Used in fabrication of wear- and corrosion-resistant components.
Uses
Slurry tanks, thickeners, chute liners, and processing vessels.
Why Duplex Steel?
High strength with superior resistance to erosion and corrosion.
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