What are Duplex Steel Sheets, Plates & Coils?

Panchdeep Metal is a trusted manufacturer of Duplex Steel S31803 Sheets, Plates & Coils for various industries that require these stainless steel products for a strong and long lasting performance. We fabricate these products under the most stringent quality control and provide them as per the various dimensions required by the client’s projects.

Duplex steel contains a mixture of both austenitic and ferritic structures. It offers high strength with excellent resistance to corrosion. Applications that require both toughness, and durability prefer these sheets, plates, and coils. The sheets, plates, and coils of this Duplex UNS S31803 work well in wet and corrosive environments. The product is heat-treated and resistant to the stress corrosion cracking in chloride-rich areas like seawater systems and chemical industries.

Panchdeep Metal Company is a trusted manufacturer of Duplex Steel 2205 Sheet & Plate for heavy-duty use. We work with strict standards to deliver strong and reliable products that perform well in harsh environments. These sheets and plates combine high strength with steady corrosion resistance, making them a trusted choice for demanding systems. The grade carries balanced austenitic and ferritic traits, which help it handle high pressure and stress.

Engineers pick Duplex Steel 2205 Sheet, Duplex Steel 2205 Plate, and ASTM A240 UNS S32205 Duplex Sheet when they need stable quality with a long service life. Industries like oil refining, marine systems, desalination, and chemical storage count on this material where failure is not an option.

Specification of Duplex Steel S31803 Sheets Plates

Chemical Composition of Duplex Steel S31803 Sheets Plates

Mechanical Properties of Duplex Steel S31803 Sheets Plates

Equivalent Properties of Duplex Steel S31803 Sheets Plates

Types of Duplex Steel S31803 Sheets Plates

Application of Duplex Steel S31803 Sheets Plates

Types of Duplex 2205 Plate

These plates are offered in various forms each designed to accommodate specific system requirements, and manufacturing processes.

Hot Rolled Duplex 2205 Plate.

Cold Rolled Duplex 2205 Plate

Clad Plates

Duplex 2205 Shim Sheet

Duplex SS Sheet Metal

SAF 2205 Perforated Sheet

S31803 Duplex Stainless Steel Plate Specification

These specifications cover size, standards, and product forms. It helps buyers to choose the right grade for their project.

Specification	Details
Grade	Duplex Steel UNS S31803
Standard	ASTM A240 / ASME SA240
Thickness	0.3 mm to 100 mm
Width	1000 mm to 2500 mm
Length	2000 mm to 6000 mm or custom
Surface Finish	No. 1, 2B, BA, Satin, Hairline, Polished
Forms	Sheets, Plates, Coils, Strips, Rolls
Hardness	Annealed

Duplex S31803 Plate Equivalent Grades

Different standards classify Duplex UNS S31803 differently, but the material properties remain the same.

Country/Standard	Equivalent Grade
UNS	S31803
Werkstoff Nr	1.4462
EN	X2CrNiMoN22-5-3
ASTM	A240 S31803
JIS	SUS F22

S31803 Duplex Steel Plate Chemical Properties

Duplex UNS S31803 is chemically designed to be strong and resistant to corrosion, particularly in chloride conditions.

Element	Composition (%)
Chromium (Cr)	21.00–23.00
Nickel (Ni)	4.50 – 6.50
Molybdenum (Mo)	2.50 – 3.50
Nitrogen (N)	0.08 – 0.20
Carbon (C)	≤ 0.03
Manganese (Mn)	≤ 2.00
Silicon (Si)	≤ 1.00
Phosphorus (P)	≤ 0.030
Sulfur (S)	≤ 0.020
Iron (Fe)	Balance

Duplex Stainless Steel S31803 Plates Mechanical Properties

The mechanical properties show how well the material handles pressure, loads and fabrication work.

Property	Value
Tensile Strength	620 MPa Min
Yield Strength	450 MPa Min
Elongation	25% Min
Hardness	290 HB Max
Impact Strength	High (even at low temperatures)

Application of Duplex Steel S31803 Plates / Sheets / Coil

Duplex Steel S31803 sheets, plates and coils provide high strength, excellent corrosion resistance, and reliable weldability. It works well in harsh, corrosive, and high-stress conditions, making it suitable for long-term industrial applications.

Chemical Processing: Chemical industries use these products to handle acids, solvents, and severe fluid media. Its high resistance to chlorine exposure protects storage tanks, filters, and reaction units. It offers an extended service life even in extremely corrosive environments.
Oil and Gas Industry: UNS S31803, which is used in offshore rigs, pipelines, and transportation systems, is resistant to seawater and sour gas cracking. Its strength and corrosion resistance make it suitable for long-term oil and gas operations at high pressures.
Marine and Desalination: Ships, heat exchangers, and desalination units prefer this grade for its saltwater resistance. It prevents pitting corrosion and maintains strength where many standard steels fail, making it suitable for seawater-based equipment.
Pressure Vessels and Structural Use: Plates and coils are used for tanks, vessel walls, platforms, and load-bearing parts. They hold up under high pressure without deforming, making them safe for critical operations in industrial setups.
Fabrication and Industrial Use: The material is easy to cut, bend, and form for custom equipment and machine parts. Its accurate thickness and durable finish help speed up fabrication while ensuring long-term reliability in demanding environments.

Why Choose Panchdeep Metal for Duplex Steel S31803 Sheet, Plate, and Coil?

We offer Duplex Steel S31803 Sheets, Plates & Coils to clients with strict quality standards and a focus on customer requirements. Panchdeep Metal is a trusted manufacturer known for its ready stock, fast delivery, and custom sizing for small and large fabrication requirements. Our team checks each manufactured product for thickness accuracy, hardness, corrosion resistance, and finish before dispatch. We provide all types of Duplex UNS S31803 sheets, plates, and coils in commercial and heavy-duty grades.

Our clients rely on us as we provide a comprehensive material test report, ensure safe packaging and offer cheap costs without sacrificing quality. Also, the assistance does not end with the delivery of the products; our staff helps buyers choose the right steel for tanks, machinery, and piping work in the marine industry. That focus makes us a dependable source for high-performance Duplex S31803 products.

FAQ

What are the benefits of using Duplex Steel UNS S31803?

Properties of Duplex Steel UNS S31803 include high strength, strong corrosion resistance, and easy weldability which make it suitable for tough industrial use. It performs well in chloride-rich conditions, including seawater and chemical processing. The material resists cracking, pitting, and stress corrosion, making equipment last with reduced maintenance.

Does Panchdeep Metal provide custom duplex steel sheets, plates, and coils?

Yes, Panchdeep Metal provides Duplex Steel S31803 Sheets, Plates & Coils in customized sizes, thicknesses, and surface finishes. We support small, and bulk requirements, providing swift delivery and complete documentation. Our team assists with material selection and ensures each order meets the exact project needs.