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Duplex Steel S31803 Circles

Name: Duplex Steel S31803 Circles
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 Circles Specification

Corrosion Resistant
Excellent corrosion resistance to pitting and crevice

Hardness
290 HB

Coating Type
Uncoated / Custom coating as per request

Chemical Composition
Cr 21-23%, Ni 4.5-6.5%, Mo 2.5-3.5%, N 0.08-0.2%, C 0.03%, Mn 2%, Si 1%, P 0.03%, S 0.02%, Fe Balance

Recyclable
Yes

Tensile Strength
620 MPa (min)

Width
Customizable as per requirement

Temper
Annealed / Hardened

Size
Custom sizes available

Heat Resistance
Yes

Material Composition %
Standard Duplex composition as per UNS S31803

Diameter
50mm to 1000mm or custom

Product Form
Circle, Ring, Blank

Product Name
Duplex Steel S31803 Circles

Steel Type
Duplex Stainless Steel

Steel Product Type
Circles / Rings

Grade
UNS S31803

Thickness
3mm to 100mm or as required

Shape
Circle

Steel Standard
ASTM A240 / ASME SA240

Surface
Polished / Bright / Matt finish

Composition
Duplex S31803

Application
Oil & Gas Industry, Petrochemical, Chemical Processing, Marine, Pulp & Paper Industry

Dimension (L*W*H)
Custom sizes available

Weight
As per size and thickness

Color
Metallic Grey

Material Grade
S31803

Finish Type
Smooth, Machined, Polished

Usage
Gaskets, Flanges, Mechanical Components, Heat Exchangers

Magnetic Properties
Ferritic-Austenitic, partly magnetic

Standard Tolerance
As per ASTM/ASME specifications

Elongation
25% (min)

Packaging Type
Standard export packaging (wooden cases/pallets)

Edge Condition
Mill Edge / Slit Edge

Yield Strength
450 MPa (min)

Density
7.8 g/cm3

Duplex Steel S31803 Circles Trade Information

Minimum Order Quantity
1 Kilograms

Delivery Time
7 Days

Duplex Steel S31803 Circles About

Duplex Steel S31803 Circle, also known as UNS S31803, is a kind of duplex stainless steel characterized by both austenitic and ferritic stainless steel properties. It usually has 21-23% chromium, 4. 5-6. Chromium is from 5% nickel, up to 0. 3% nitrogen, and an equiaxed grain structure of approximately 50% ferrite and 50% austenite.

Superior Mechanical Performance

Duplex Steel S31803 Circles deliver an impressive minimum tensile strength of 620 MPa and a yield strength of 450 MPa, supporting demanding applications where both strength and ductility are essential. These circles also offer a minimum elongation of 25%, coupled with a hardness of up to 290 HB, ensuring lasting durability and resilience under strain.

Exceptional Corrosion Resistance

Engineered with a standard duplex composition, S31803 circles resist pitting and crevice corrosion-even in aggressive environments. Their robust chromium, nickel, and molybdenum content make them ideal for use in marine, oil & gas, and chemical processing settings, providing reliability where corrosion resistance is paramount.

Customizable Dimensions and Finishes

Available with diameters ranging from 50mm to 1000mm and thickness of 3mm to 100mm (or as required), S31803 circles can be tailored to precise operational needs. Options for polished, bright, or matt finishes, as well as mill or slit edge conditions, enable seamless integration into various industrial uses.

FAQ's of Duplex Steel S31803 Circles:

Q: How are Duplex Steel S31803 Circles commonly used in industry?

A: Duplex Steel S31803 Circles are widely utilized in the oil & gas, petrochemical, marine, and pulp & paper industries, typically serving as gaskets, flanges, mechanical components, and heat exchanger parts due to their notable strength and resistance to corrosion.

Q: What benefits does Duplex Steel S31803 offer over conventional stainless steels?

A: S31803 exhibits higher mechanical strength, superior corrosion resistance to pitting and crevice attack, and improved durability, making it better suited for harsh environments than standard austenitic stainless steels.

Q: Where can I request specific diameters, thicknesses, or edge finishes for these circles?

A: You can request custom diameters (50mm to 1000mm), thicknesses (3mm to 100mm), and edge finishes (mill edge or slit edge) directly from the manufacturer, supplier, or exporter as per your project requirements.

Q: What is the manufacturing process for Duplex Steel S31803 Circles?

A: The circles are manufactured following ASTM A240/ASME SA240 standards, involving precise cutting (and sometimes machining) of annealed or hardened duplex steel, followed by finishing and quality checks to guarantee specification adherence.

Q: When should I choose annealed or hardened temper in S31803 Circles?

A: Select annealed temper for applications needing greater ductility and formability, while hardened temper is suitable for uses demanding maximum mechanical strength and hardness.

Q: What makes these circles suitable for high-temperature or corrosive environments?

A: Their duplex structure, alloy composition (Cr, Ni, Mo, N), and minimum tensile strength of 620 MPa provide excellent resistance to corrosion, heat (up to 300C), and mechanical stress, ensuring reliability in challenging conditions.

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