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Duplex Steel S31803 Plates

Name: Duplex Steel S31803 Plates
Brand: Skyland Metal & Alloys Inc.
Price: 500.0 INR
Availability: InStock

Price 500.0 INR/ Kilograms

Get a Price/Quote

MOQ : 1 Kilograms

Duplex Steel S31803 Plates Specification

Hardness
293 HB max

Tensile Strength
620 MPa minimum

Size
Standard & Customized sizes

Width
1000 mm to 2500 mm

Recyclable
Yes

Coating Type
Uncoated (can be coated as per request)

Diameter
N/A (applies to sheets & plates)

Material Composition %
Cr: 21-23, Ni: 4.5-6.5, Mo: 2.5-3.5, N: 0.08-0.20

Heat Resistance
Yes

Product Form
Plate / Sheet

Temper
Annealed

Corrosion Resistant
Excellent against Chloride Stress Corrosion and Pitting

Product Name
Duplex Steel S31803 Plates

Steel Type
Duplex Stainless Steel

Steel Product Type
Plate / Sheet

Grade
UNS S31803 / 2205

Thickness
0.3 mm to 100 mm

Shape
Rectangular Plate / Sheet

Steel Standard
ASTM A240 / ASME SA240

Surface
Hot Rolled / Cold Rolled, Pickled, Bright, Matte

Composition
22% Cr, 5-6.5% Ni, 3% Mo, balance Fe with N, Mn, Si, and minor elements

Application
Oil & Gas, Petrochemical, Chemical Processing, Marine, Power Generation, Pulp & Paper, and Desalination Industries

Dimension (L*W*H)
Customized, typically 2000 mm to 6000 mm (L)

Weight
As per size & thickness

Color
Metallic Silver / Grey

Material Grade
S31803

Finish Type
2B, BA, No.1, No.4, No.8

Usage
Pressure Vessels, Heat Exchanger, Fabrication, Structural Applications

Yield Strength
450 MPa minimum

Magnetic Properties
Slightly magnetic

Edge Condition
Mill / Slit Edge

Weldability
Good (recommended low heat input welding)

Modulus of Elasticity
200 GPa

Density
7.8 g/cm3

Delivery Condition
Hot Rolled / Cold Rolled, Annealed, Pickled

Elongation
25% minimum

Forming
Good, suitable for bending and roll forming

Packing
Standard Export Seaworthy Packing

Thermal Conductivity
19.0 W/m-K at 100C

Duplex Steel S31803 Plates Trade Information

Minimum Order Quantity
1 Kilograms

Delivery Time
7 Days

About Duplex Steel S31803 Plates

Duplex steel plates are flat steel material produced by duplex stainless steel, which is a combination of austenitic and ferritic stainless steel. Due to these properties, they are ideal for high-pressure and corrosive applications, thus making them ideal for structural and industrial applications.

Superior Mechanical Properties

Duplex Steel S31803 Plates are engineered to provide high tensile strength (min. 620 MPa) and yield strength (min. 450 MPa), while maintaining good ductility with at least 25% elongation. These attributes ensure the plates can withstand both heavy loads and demanding fabrication processes such as bending, roll forming, and welding with low heat input.

Exceptional Corrosion and Heat Resistance

Thanks to their duplex structure and carefully balanced alloy composition, S31803 plates offer remarkable resistance to pitting, crevice, and chloride stress corrosion. Their performance remains reliable even in marine and chemical environments. Additionally, these plates are heat resistant up to 300C, suiting a wide range of industrial applications.

Versatile Applications and Customization

Available in standard and custom sizes, Duplex Steel S31803 Plates are delivered in hot or cold rolled, annealed, and pickled conditions. Their versatility makes them favored in pressure vessels, heat exchangers, structural components, and equipment for oil & gas, chemical processing, and desalination industries. All plates are packed to withstand export shipment.

FAQ's of Duplex Steel S31803 Plates:

Q: How are Duplex Steel S31803 Plates typically processed and finished?

A: These plates undergo hot or cold rolling, followed by annealing and pickling to ensure optimal mechanical properties and surface quality. They can be supplied in various finishes, such as 2B, BA, No.1, No.4, and No.8, based on application needs.

Q: What benefits make S31803 plates suitable for chemical and marine industries?

A: Their excellent resistance to chloride-induced pitting and stress corrosion, combined with superior strength, makes them ideal for harsh environments found in chemical processing and marine applications. The duplex microstructure also ensures good durability in demanding operational conditions.

Q: When is low heat input welding recommended for these plates?

A: Low heat input welding is advised during fabrication to preserve the duplex microstructure and mechanical properties. This process minimizes the risk of adverse effects such as decreased corrosion resistance or embrittlement in the heat-affected zones.

Q: Where can Duplex Steel S31803 Plates be utilized?

A: These plates are widely used in oil & gas, petrochemical, power generation, desalination, pulp & paper, and marine industries. Their impressive mechanical and anti-corrosive attributes make them suitable for various critical components such as heat exchangers, pressure vessels, and structural parts.

Q: What forming techniques can be applied to Duplex Steel S31803 Plates?

A: The plates exhibit good workability and can be bent or roll-formed into required shapes without compromising structural integrity. Annealing ensures they remain ductile and workable throughout forming processes.

Q: How does the composition of S31803 enhance its properties?

A: The balanced composition of chromium, nickel, and molybdenum, along with nitrogen, enhances both strength and corrosion resistance. This structure allows the plates to resist cracking, pitting, and general degradation in aggressive environments.

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