Duplex Steel S31803 Plates for Heavy-Duty Applications

Duplex Steel & Alloys is a leading manufacturer and supplier of Duplex Steel S31803 Plates. Our plates are used in industries such as oil & gas, chemical processing, power generation, and aerospace industries, because of its superior strength, corrosion resistance, and durability. Our products are built to withstand pressure and chemical attack. In accordance with international standards and industry certifications, we guarantee the highest quality and reliability of each product, making us the preferred choice for critical applications worldwide.

Chemical Composition

Duplex Steel S31803 contains three primary components: Chromium, Molybdenum, and Nitrogen, each offer different advantages

• Chromium (22%): Offers improved resistance to oxidation, scaling and pitting corrosion to plates especially in harsh working conditions.
• Molybdenum (3%): Increases resistance to crevice and pitting corrosion and hence the use of duplex steel S31803 plates in marine and chemical industries.
• Nitrogen (0.14%): Improves mechanical properties and ability to resist stress corrosion cracking that makes these duplex steel plates more durable under high pressure.

These components help to offer Duplex Steel plates increased strength and better weight to strength ratio, superior corrosion resistance, and excellent performance in chloride, acid and other chemical exposed environments.

Mechanical Properties

Our Duplex Steel S31803 plates are made to have a high level of strength and toughness. Some of the key mechanical properties include:

• Tensile Strength: About 620 MPa (min), so that the plates can carry a lot of stress and weight.
• Yield Strength: About 450 MPa (min) thus making plates more resistant to deformation and very durable.
• Elongation: 25% (min), which helps the duplex steel plates to withstand impact and flex without cracking and improve the fatigue resistance of the material.
• Impact Toughness: Guarantees high workability of S31803 duplex steel plates in cryogenic service environment.

Due to these mechanical properties, Duplex Steel S31803 plates find application where high pressure and high temperature are involved.

Standards Compliance

At Duplex Steel & Alloys, we ensure that our Duplex Steel S31803 Plates comply with the highest international standards. Our products are manufactured in adherence to the following key standards:

• ASTM A789/A790: Standards for stainless steel pipes and plates – seamless and welded.
• EN 10088: The European standard for corrosion resistant stainless steel.
• EN 10088: European standard specifying the technical delivery conditions for duplex stainless steel plates.

Also, we have ISO 9001 and ASME certifications that ensure we follow quality standards worldwide.

Applications of Duplex Steel S31803 Plates

Our Duplex Steel S31803 plates are highly versatile and used across various industries due to their superior performance characteristics:

• Oil & Gas: With high corrosion resistance to chlorides and H2S, these plates are used for offshore platforms and pipelines.
• Chemical Processing : Resistance to acids, alkalis, and other chemicals makes these S31803 duplex steel plates ideal for reactors and other chemical processing applications.
• Power Generation: Duplex Steel Plates ability to withstand high temperatures and pressure makes them ideal for boiler environments and turbine systems.
• Shipbuilding: With exceptional resistance to seawater corrosion and high toughness, Duplex Steel S31803 plates are used in ship hulls and marine structures.
• Heavy Equipment: High tensile strength and wear resistance make our duplex stainless steel plates suitable for structural support in heavy equipment.

Duplex S31803 vs. S32205 Plates

S31803 plates are made of 22% chromium and 3% molybdenum that provide the material with general corrosion resistant characteristics. S32205 plates contains more nitrogen (0.18 – 0.22 %) and thus offers higher strength and increased corrosion resistance particularly in severe conditions. Though both plates have good tensile strength, the S31803 duplex steel plates are more suitable for extreme conditions such as marine and chemical industries.

How is Duplex Steel S31803 tested for quality?

At Duplex Steel & Alloys, we prioritize the quality and reliability of our Duplex Steel S31803 Plates. To guarantee quality, we have third party testing done on all our products. These tests include:

• PMI: Ensures the chemical analysis of the plates, in order to ensure that it meets the required duplex steel grade for material classification.
• Hydrostatic Test: Assesses the ability of our plates to handle pressure to eliminate leakage and performance in high-pressure applications including pipelines and pressure vessels.
• Radiography: Finds internal defects like crack or voids and checks the microstructure and weld for applications like marine structures and welded pipelines.

These third-party tests provide our customers with additional assurance of the material's quality, reliability, and suitability for demanding industrial applications.

Logistics and Product Documentation

To support our commitment to quality and transparency, we provide comprehensive Product Documentation for every order, including:

• Material Test Certificates (MTC): Explaining the chemical composition, the mechanical characteristics, and conformity to standards.
• Third-Party Test Reports: Confirming the findings of PMI, hydrostatic and radiography tests in order to determine the reliability and efficiency of the plates.
• Compliance Certificates: Assuring compliance to standards such as ASTM, EN and ISO certifications.

We also provide custom dimensions and can accommodate large orders so your project can remain on deadline.

Why Duplex Steel & Alloys?

Duplex Steel & Alloys stands out as a trusted supplier of high-performance materials, offering Duplex Steel Plates that deliver strength & durability in every application.

• Industry Certifications: With certifications like ISO 9001, PED, and ASME, we guarantee that our products meet the highest quality and safety standards.
• Comprehensive Testing: We conduct rigorous third-party tests to ensure that every plate we supply meets the required specifications.
• Customer-Centric Approach: We provide accurate documentation and individual approach to the customer support with the opportunity to choose a convenient shipping method.

Choose Duplex Steel & Alloys for reliable, high-quality Duplex Steel S31803 plates that stand up to the toughest applications.

S31803 Duplex Stainless Steel Plate Specification

Types of Duplex Stainless Steel S31803 Plates

UNS S31803 Plate Equivalent Material

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Duplex Stainless Steel S31803 Plate Price List

Duplex Stainless Steel S31803 Size Chart

Duplex Steel UNS S31803 Sheet Weight Chart

Stock available for Range of Duplex Steel S31803 Plate

Tests of ASTM A240 UNS S31803 Plate

Before being prepared for shipment to the customer, ASTM A240 Duplex Steel S31803 Plates Testing should be constructed in accordance with applicable standards and thoroughly tested for potential flaws.

Finishes Of Duplex Steel S31803 Plate

Duplex Steel S31803 Plate - Comparing International Standards

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S31803 Duplex Steel Sheets Supply in Below Countries

Common Application for Duplex Stainless Steel S31803 Sheets