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Duplex Steel S31803 Coil

Name: Duplex Steel S31803 Coil
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 Coil Specification

Coating Type
Uncoated/Polished

Heat Resistance
Yes

Product Form
COIL

Material Composition %
Cr 21-23%, Ni 4.5-6.5%, Mo 2.5-3.5%, others balanced

Chemical Composition
Cr 21-23%, Ni 4.5-6.5%, Mo 2.5-3.5%, N 0.08-0.20%, Mn 2%, Si 1%, C 0.030%, P 0.03%, S 0.02%

Hardness
187 HB max

Size
Customized

Recyclable
Yes

Diameter
As required

Temper
Soft, Quarter Hard, Half Hard, Full Hard

Tensile Strength
620 MPa min

Corrosion Resistant
Excellent to pitting and crevice corrosion

Width
Up to 1500 mm

Product Name
Duplex Steel S31803 Coil

Steel Type
Duplex Stainless Steel

Steel Product Type
Coil

Grade
UNS S31803

Thickness
0.3 mm to 10 mm

Shape
Rings

Steel Standard
ASTM A240, ASTM A789, ASTM A790

Surface
Bright, 2B, BA, No.1, Polished

Composition
Duplex Microstructure (Austenite-Ferrite)

Application
Marine industries, Chemical processing, Oil and gas, Heat exchangers, Pressure vessels, Paper and pulp industries

Dimension (L*W*H)
Customized as per requirement

Weight
Varies - as per coil size

Color
Silver/Grey Metallic

Material Grade
Duplex steel S31803

Finish Type
Cold Rolled / Hot Rolled

Usage
Industrial, Structural, Marine, Chemical Processing

Operating Temperature Range
-50 C to +300C

Impact Strength
High (Charpy V-Notch, up to 200 J at room temp)

Density
7.80 g/cm3

Weldability
Good, suitable for most welding methods

Yield Strength
450 MPa min

Magnetism
Slightly magnetic

Standard Packaging
Coil packed with export worthy packing

Elongation
25% min

Duplex Steel S31803 Coil Trade Information

Minimum Order Quantity
1 Kilograms

Delivery Time
7 Days

About Duplex Steel S31803 Coil

Duplex steel S31803 coil is a type of duplex stainless steel that is appreciated for its excellent mechanical properties and corrosion resistance. The S31803 grade is a dual-phase material with both austenite and ferrite, with special characteristics that make it suitable for use in industries. These coils are applied in industries that require high performance, durability, and reliability, as well as sectors that offer solutions to some of the most demanding conditions.

Superior Mechanical Performance

Duplex Steel S31803 Coil is engineered to provide high yield (450 MPa) and tensile strength (620 MPa), ensuring excellent performance in heavy-duty applications. Its adaptability in temper-from soft to full hard-allows specification according to project needs. High impact resistance (up to 200 J at room temperature) makes it ideal for applications subjected to dynamic loads.

Outstanding Corrosion Resistance

This coil's microstructure, comprising both austenite and ferrite, offers superior resistance to pitting and crevice corrosion. With chemical constituents like 21-23% chromium and 2.5-3.5% molybdenum, Duplex Steel S31803 Coil maintains integrity in aggressive marine, chemical, and oil & gas environments. Continuous heat resistance up to 300C further enhances its durability.

Versatile and User-Friendly Processing

Featuring good weldability suitable for most common welding techniques and customizable dimensions (width up to 1500 mm), Duplex Steel S31803 Coil is designed for easy manufacturing and installation. Both hot and cold-rolled finishes are available, and the product is safely packed for export, catering to global markets and diverse applications.

FAQ's of Duplex Steel S31803 Coil:

Q: How can Duplex Steel S31803 Coil be used in marine and chemical processing applications?

A: Duplex Steel S31803 Coil offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, making it highly suitable for components exposed to aggressive seawater or chemical environments, such as heat exchangers, pressure vessels, and piping systems in marine and chemical processing industries.

Q: What benefits does the duplex microstructure provide for industrial usage?

A: The duplex (austenite-ferrite) microstructure delivers a balance of high strength and ductility, along with enhanced resistance to corrosion. This combination extends the service life of components and reduces maintenance needs in demanding and corrosive environments.

Q: When should I select different tempers (soft, quarter hard, half hard, full hard) of Duplex S31803 Coil?

A: Selecting the appropriate temper depends on application requirements: soft temper for forming and fabrication ease, quarter and half hard for moderate strength with some formability, and full hard for maximum strength and rigidity. These options let you tailor mechanical properties to fit specific operational demands.

Q: What is the process for welding Duplex Steel S31803 Coil, and does it require special considerations?

A: Duplex Steel S31803 demonstrates good weldability and is compatible with most standard methods, including TIG, MIG, and SAW. However, controlling heat input and interpass temperature is recommended to maintain optimal duplex microstructure and avoid reduced resistance to corrosion or embrittlement.

Q: Where is Duplex Steel S31803 Coil typically applied, and what are its common product forms?

A: This coil is widely used in marine industries, oil and gas production, chemical processing, heat exchangers, and pulp & paper plants. It is mainly supplied as coils or rings, with customizable dimensions for each application. The cold- or hot-rolled finish meets strict industry standards.

Q: What advantages does the high impact strength provide in practical applications?

A: With Charpy V-Notch impact values up to 200 J at room temperature, Duplex Steel S31803 Coil handles dynamic loads and sudden mechanical stresses efficiently. This property is especially beneficial in structures or equipment subject to shocks or fluctuating pressure conditions.

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