Home >Duplex Steel > Duplex Steel Sheet and Plates
Duplex steel sheets and plates are flat, thin pieces of material made from duplex stainless steel. Duplex stainless steel is a type of stainless steel that contains a two-phase microstructure consisting of roughly equal portions of austenite and ferrite phases. This dual-phase structure provides a combination of excellent corrosion resistance and high strength, making duplex steel sheets/plates highly suitable for a wide range of applications in various industries.
| Specifications | ASTM B171, B122 / ASME SB171, SB122 |
| Standards | ASTM, ASME and API |
| Size | 1 mm to 100 mm |
| Finishing | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Coils, Foils, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) & Angle, Channel, Tray, Roll Etc. |
| Hardness | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
| Grade | UNS NO. C92200 & UNS NO. C83600, UNS NO. C70600 ( CU -NI- 90/10), C71500 ( CU -NI- 70/30), UNS NO C10100, C10200, C10300, C10800, C12000, C12200. |
| MN | C | SI | S | P | CR | NI | MO | N |
|---|---|---|---|---|---|---|---|---|
| 2.0 max | 0.03 max | 1.0 max | 0.02 max | 0.03 max | min: 21.0 max: 23.0 | min: 4.5 max: 6.5 | min: 2.5 max: 3.5 | min: 0.08 max: 0.20 |
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We offer These Duplex Steel Sheet and Plates per DIN, ISO, JIS or ANSI Standard.
Excellent Corrosion Resistance: Duplex stainless steel offers superior corrosion resistance compared to conventional austenitic stainless steels, particularly in chloride-rich environments like seawater and chemical processing.
High Strength: Duplex steel sheets/plates have higher strength levels than austenitic stainless steels, allowing for thinner material thicknesses and reduced weight in structural applications while maintaining structural integrity.
Cost-Effectiveness: While duplex stainless steel may have a higher initial cost compared to austenitic stainless steels, its superior corrosion resistance and mechanical properties often result in long-term cost savings through reduced maintenance, repair, and replacement expenses.
Versatility: Duplex steel sheets/plates are versatile and can be used in a wide range of applications across various industries, including oil and gas, chemical processing, marine engineering, pulp and paper, and architectural applications.
Weldability: Duplex steel sheets/plates are readily weldable using common welding techniques, allowing for ease of fabrication and assembly into complex structures without compromising corrosion resistance or mechanical properties.
Duplex steel sheets/plates find widespread industrial use across various sectors due to their unique combination of excellent corrosion resistance, high strength, and versatility. Common industrial uses include applications in the oil and gas industry for offshore platforms, pipelines, and subsea equipment, where corrosion resistance and strength are essential for withstanding harsh environments.
Oil and Gas Industry: Duplex steel sheets/plates are used in offshore platforms, subsea equipment, pipelines, and storage tanks due to their corrosion resistance and high strength, especially in aggressive environments containing chloride ions and hydrogen sulfide.
Chemical Processing: Duplex steel sheets/plates are employed in chemical processing plants for manufacturing pressure vessels, heat exchangers, and piping systems handling corrosive chemicals, acids, and solvents.
Marine Engineering: In marine applications, duplex steel sheets/plates are used for shipbuilding, seawater desalination plants, offshore structures, and marine equipment due to their resistance to seawater corrosion and high mechanical strength..
Power Generation: In the power generation sector, duplex steel sheets/plates are utilized for manufacturing boilers, heat exchangers, turbine components, and exhaust systems due to their resistance to high temperatures and corrosion in steam and flue gas environments..
Aerospace Industry: In the aerospace sector, duplex steel sheets/plates are utilized for manufacturing aircraft components such as landing gear, engine mounts, and structural elements due to their lightweight properties, high strength, and corrosion resistance.
Identify Application Requirements: Determine the operating conditions, including temperature, pressure, corrosion, and mechanical stress levels, to select duplex steel sheets/plates that can withstand these conditions.
Grade Selection: Choose the appropriate duplex stainless steel grade based on the specific requirements of your application. Common grades include duplex stainless steel UNS S31803, UNS S32205, and UNS S32750, each offering different levels of corrosion resistance, strength, and other properties.
Corrosion Resistance: Evaluate the corrosion resistance of the duplex steel sheets/plates against the specific corrosive agents present in your application, such as acids, alkalis, chlorides, and seawater, to ensure long-term performance and durability.
Mechanical Properties: Consider the mechanical properties of the duplex steel sheets/plates, including tensile strength, yield strength, elongation, and hardness, to ensure they meet the mechanical requirements of your application.
Size and Thickness: Select duplex steel sheets/plates with the appropriate size and thickness to match your application requirements, considering factors such as load-bearing capacity, dimensional tolerances, and available space.
Yes, Duplex steel sheets and plates can be suitable for hygienic and sanitary applications, particularly in industries such as food and beverage, pharmaceuticals, and biotechnology.
Common grades of Duplex stainless steel used for sheets/plates include UNS S31803 (2205), UNS S32205, UNS S32750 (2507), and UNS S32760, each offering specific properties and performance characteristics for different applications.
Duplex steel sheets and plates can be fabricated and machined using conventional methods such as cutting, bending, forming, welding, and machining. Proper precautions should be taken to avoid work hardening and tool wear.
Duplex steel sheets and plates are available in various sizes and standards such as ASTM, ASME, and EN standards. Common sizes range from thin gauge sheets to thick plates, with widths and lengths varying based on application requirements.
| Thickness | Width | Length | Surface Finish |
|---|---|---|---|
| 15~85 mm | 914, 1219, 1524 mm | 3048, 6069 mm 10 M | Black |
| 3~8 mm | 20~1524 mm | Container Loading: Max. 10M Bulk: as request | No.1 |
| 8 up ~ 60 mm | 30~1524 mm | Max. 6096 mm | No.1 |
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