Duplex Stainless Steel Sheet S31803
Duplex Stainless Steel Sheet S31803
Introduction:
The S31803 duplex stainless steel sheet is a high-performance industrial material designed for applications requiring superior corrosion resistance and high strength. With a duplex microstructure combining ferritic and austenitic phases, S31803 offers excellent resistance to chloride-induced stress corrosion, pitting, and crevice corrosion, while maintaining high tensile strength and durability. This makes it ideal for chemical processing, petrochemical plants, offshore structures, desalination, and industrial fabrication. Its pickled and passivated surface ensures a smooth and corrosion-resistant finish, suitable for both structural and process applications.
Material Table:
| Material Grade | Description | Key Properties |
|---|---|---|
| S31803 Duplex Stainless Steel | Ferritic-Austenitic duplex stainless steel | High strength, excellent resistance to pitting and crevice corrosion, suitable for chemical, petrochemical, and offshore applications |
Specifications Table:
| Parameter | Value / Range |
|---|---|
| Standard | ASTM A240 / EN 10088 |
| Sheet Type | Flat Sheet |
| Thickness | 1mm – 20mm |
| Width | 1000mm – 2000mm |
| Length | 2000mm – 6000mm |
| Surface Finish | Pickled & Passivated / 2B / Polished |
| Material | S31803 Duplex Stainless Steel |
Manufacturing Process Table:
| Step | Description |
|---|---|
| Raw Material Selection | High-quality S31803 duplex stainless steel slabs |
| Hot Rolling | Rolled to desired thickness |
| Cold Rolling | Refined for precise dimensions and surface finish |
| Heat Treatment | Solution annealing to enhance corrosion resistance and mechanical properties |
| Surface Treatment | Pickling and passivation for smooth, corrosion-resistant surface |
| Inspection & Testing | Thickness, dimensional, and surface quality inspections |
| Packaging | Protective packaging to prevent scratches and deformation during transport |
Uses / Applications Table:
| Industry / Application | Description |
|---|---|
| Chemical & Petrochemical | Storage tanks, piping, and process equipment |
| Offshore & Marine | Corrosion-resistant structural panels and pipelines |
| Desalination Plants | Seawater and brine transport |
| Industrial Fabrication | Structural sheets, enclosures, and cladding |
| Heat Exchangers | High-pressure and corrosive fluid tubing |
Advantages:
- Superior Corrosion Resistance: Excellent performance in chlorides, acids, and industrial environments.
- High Strength: Duplex microstructure provides higher tensile strength than standard austenitic stainless steel.
- Durable & Long-Lasting: Minimizes maintenance and extends operational life.
- Smooth Surface Finish: Reduces fouling and scaling while ensuring structural and process integrity.
- Versatile Applications: Suitable for chemical, petrochemical, offshore, desalination, and industrial fabrication projects.
FAQ:
- Q: Can S31803 duplex stainless steel sheets be used in seawater applications?
A: Yes, the duplex structure provides superior chloride and seawater corrosion resistance. - Q: Are custom thicknesses and sizes available?
A: Yes, thickness, width, and length can be customized according to project requirements. - Q: Is this suitable for chemical processing plants?
A: Absolutely, S31803 is widely used for chemical tanks, piping, and process equipment. - Q: How is quality ensured?
A: Sheets undergo dimensional, surface, and mechanical inspections according to ASTM and EN standards.
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