Uses and Benefits of Duplex Stainless Steel Plates 

Duplex stainless steel plates are a remarkable material known for their unique composition and exceptional properties. They are characterized by a two-phase microstructure, combining the best features of both ferritic and austenitic stainless steels. This duplex structure enhances their strength, durability, and corrosion resistance, making them ideal for various applications. Shree Venktesh Wires & Steel Pvt Ltd is a leading Duplex Steel 2205 Plate Supplier in India. With three decades of experience and a strong partnership with Jindal Stainless Ltd, we are committed to providing top-quality products to our valued customers. 

In this comprehensive guide, we will explore the various uses and benefits of Duplex Stainless Steel Plates, shedding light on why they are a preferred choice in many industries.

Duplex Stainless Steel Plates

Duplex stainless steel plate is a type of steel that has a unique composition that includes high levels of chromium and moderate amounts of nickel. This type of steel is known for its excellent combination of mechanical properties and resistance to corrosion. The secret behind its success is its balanced microstructure which contains equal volume percentages of both ferrite and austenite. Duplex 2205 Stainless Steel is a common grade of duplex stainless steel that is widely used due to its exceptional properties.

Properties of Duplex Stainless Steel Plates

Duplex stainless steel plates have a number of outstanding technical properties, among them:

  • Increased corrosion resistance against crevice, pitting and
  • stress corrosion cracking
  • In terms of energy absorption: high resistance to erosion and abrasion over a wide temperature range
  • Unique strength, surpassing that value of other chromium-nickel stainless steels: this is a very important parameter as it reduces raw material consumption compared to similar inox grades
  • Combined properties of ferritic and austenitic steels, which by their very nature have high mechanical strength and excellent toughness
  • Excellent impact strength properties
  • Cost-effective compared to other stainless steel grades
  • Easy processing
  • Higher formability compared to other chromium-nickel steels
  • Excellent weldability, also possible on larger cross-sections
  • Low thermal expansion
  • Can be used in temperatures up to 300°C

Benefits of Duplex Stainless Steel Plates

While duplex stainless steel only comprises a small percentage of the global stainless steel market, it has a range of benefits when compared to traditional austenitic stainless steel and ferritic stainless steel grades. 

Here are some of the benefits of Duplex Stainless Steel Plates!

Improved Strength:

Duplex stainless steel grades, such as Duplex Stainless Steel 2205 Plates, are two times stronger than austenitic and ferritic stainless steel grades.

High Toughness and Ductility:

Duplex stainless steel is often stronger and more malleable under pressure than ferritic grades. The unique structure and characteristics of duplex steel often outweigh their lower values than austenitic steel.

High Corrosion Resistance:

Duplex stainless steels offer comparable (or better) corrosion resistance than austenitic grades, depending on the grade. As a result of increased nitrogen, molybdenum, and chromium content, steels are highly resistant to corrosion and chloride pitting in crevices.

Cost Effectiveness:

Duplex stainless steel offers all of the benefits mentioned above but requires less molybdenum and nickel. This means that it is a lower-cost option than many traditional austenitic grades of stainless steel. Duplex alloys are typically less volatile in price than other steel grades, so it is easier to estimate costs on an upfront and lifetime basis. Due to their strength and corrosion resistance, duplex stainless steel plates can also be made thinner than their austenitic counterparts, resulting in lower costs.

Uses of Duplex Stainless Steel Plates

Duplex stainless steel Plates can stand up to even the harshest conditions. Because of this, they are the best choice for industries like desalination, water management, oil and gas, industrial machinery, transportation, and design and construction. 

Here are the uses of Duplex Stainless Steel Plates:

Water Treatment and Desalination:

Desalination and water treatment processes require a material that can withstand the corrosive nature of water, salt, and other liquids while maintaining durability. In this context, duplex stainless steel emerges as a highly suitable choice.

Duplex stainless steel offers exceptional strength and remarkable resistance to corrosion, making it well-suited for desalination and water treatment applications. Its ability to withstand the corrosive effects of the treated liquids ensures the longevity and reliability of the equipment and infrastructure. Additionally, the long lifespan of duplex stainless steel contributes to cost savings over time, outweighing the initial investment costs.

Petroleum and Natural Gas:

The oil and gas industry demands materials that possess exceptional strength, corrosion resistance, and ease of handling. In this regard, duplex stainless steel emerges as the optimal choice across various applications.

Duplex stainless steel exhibits remarkable resistance and durability against chloride stress corrosion cracking, making it highly suitable for offshore operations that involve high pressures and deep-sea depths. Its ability to withstand the corrosive nature of the marine environment is of paramount importance. Moreover, duplex stainless steel finds extensive use in onshore pipelines responsible for transporting corrosive substances. The superior corrosion resistance of duplex stainless steel ensures the integrity and longevity of these critical pipelines.

Given its outstanding properties, the oil and gas industry continues to rely on duplex stainless steel as the primary material for their operations. Its robustness and resistance to corrosion make it an ideal solution for the demanding environments encountered in this industry.

Transportation:

Efficient transportation plays a pivotal role in various aspects of society, ensuring the smooth movement of goods and people. Duplex stainless steel has found extensive applications in diverse modes of transportation, including boats, planes, trains, cars, and more.

When it comes to truck tanks and trailers, Duplex stainless steel stands out for its unmatched strength, durability, and corrosion resistance. These qualities make it a superior choice compared to traditional carbon steel options. Not only does it provide exceptional performance, but it also offers cost advantages.

The versatility of Duplex stainless steel extends to maritime applications, where it is utilized in constructing ship hulls, chemical tanks, and cargo containers. Its resistance to corrosion ensures the integrity of these critical components, even in demanding marine environments. Additionally, Duplex stainless steel Plates is employed in exhaust-cleaning machinery, contributing to environmental sustainability.

Moreover, the rail industry recognizes the benefits of Duplex stainless steel, leveraging its low power consumption and corrosion resistance to enhance the safety of passenger wagons.

Equipment:

Duplex stainless steel Plates have become the preferred material for a wide range of industrial equipment, thanks to their exceptional strength, durability, and easy maintenance. Industries such as food and beverage storage, pipeline systems, tanks, pressure vessels, and heat exchangers benefit greatly from the remarkable properties of Duplex stainless steel.

One of the most significant advantages of Duplex stainless steel Plates is their resistance to rusting, which eliminates the need for extensive maintenance. These storage containers remain robust and corrosion-free, ensuring long-term reliability. Unlike other materials that require protective coatings, Duplex stainless steel stands out as a cost-effective option due to its inherent rust-resistant properties and prolonged lifespan.

The pulp and paper industry also extensively employs Duplex stainless steel Plates due to their exceptional corrosion resistance and strength. This makes them highly suitable for withstanding the harsh conditions and corrosive environments typically encountered in this industry.

Construction & Building:

Duplex stainless steel plates are revolutionizing the field of architectural design. These exceptional grades offer a remarkable combination of durability and aesthetic appeal, making them ideal for applications such as roofs, walls, and bridges.

The versatility of duplex stainless steel allows them to effortlessly integrate into various architectural styles, providing architects with the freedom to explore diverse design possibilities. Furthermore, stainless steel boasts impressive longevity, requires minimal maintenance, and can be recycled, making it an environmentally conscious choice. Additionally, its compatibility with various building technologies further enhances its usability.

In the realm of bridge construction, duplex stainless steel plates find extensive application. They can be utilized in the entirety or specific components of both car and pedestrian bridges, including railings, banisters, suspension bridge wires, cables, and tie rods. The utilization of duplex stainless steel ensures structural integrity and reliability in bridge construction projects.

Why Choose SV Stainless Steel for Duplex Stainless Steel Plates?

When it comes to sourcing duplex stainless steel plates, SV Stainless Steel stands out as the premier choice for numerous reasons. As the leading Supplier, Stockist of Duplex 2205 Stainless Steel Plates in India, we have earned a solid reputation in the industry. 

Here's why you should choose SV Stainless Steel for all your duplex stainless steel plate needs:

  • Unmatched Expertise and Experience: With over three decades of partnership with Jindal Stainless Ltd, we possess extensive knowledge and experience in the field of duplex stainless steel plates. Our team of experts understands the unique requirements of various industries and can provide tailored solutions to meet your specific needs.
  • Top-Quality Products: We prioritize quality above everything else. By partnering with Jindal Stainless Ltd, a renowned and trusted manufacturer of duplex steel 2205 plates, we ensure that our duplex stainless steel plates meet the highest standards of quality, reliability, and performance. When you choose SV Stainless Steel, you can have full confidence in the excellence of our products.
  • Wide Range of Products: We offer a comprehensive range of duplex stainless steel plates, catering to diverse applications across industries. Whether you need plates for chemical processing, oil, and gas, pulp and paper, or any other sector, we have the right solution for you. Our extensive inventory ensures prompt availability and delivery.
  • Reach: SV Stainless Steel has a strong presence in India in various cities. Our duplex stainless steel plates have reached major cities like Chennai, Delhi, Vapi, Ankleshwar, Pune, and beyond. We are committed to meeting the demands of our customers, no matter where they are located.
  • Competitive Pricing: We understand the importance of cost-effectiveness. While offering top-quality products, we strive to maintain competitive pricing, ensuring that you receive the best value for your investment. Our transparent pricing policy and flexible options make SV Stainless Steel a cost-efficient choice for duplex stainless steel plates.
  • Exceptional Customer Service: At SV Stainless Steel, customer satisfaction is our utmost priority. Our dedicated and responsive customer service team is always ready to assist you at every stage of your purchase. From providing product information to assisting with order placement and post-sales support, we are committed to delivering a seamless and enjoyable customer experience.
  • Reliability and Timely Delivery: We understand the importance of meeting deadlines and ensuring the timely delivery of products. With our efficient logistics and robust supply chain, we strive to deliver your duplex stainless steel plates promptly, minimizing any disruptions to your projects.

Standards specification of Stainless Steel 2205 Duplex Plates

Standards: ASTM A240 / ASME SA240

Width: 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc

Thickness: 4mm-100mm

Length: 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc

Surface Finish: 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, hairline, sand blast, Brush, etching, Hot rolled coil (HR), Cold rolled coil (CR), SATIN (Met with Plastic Coated), etc

Hardness: Soft, Hard, Half Hard, Quarter Hard, Spring Hard, etc.

Form: Coils, Foils, Rolls, Plain Coil, Shim Coil, strips, Flats, Blank (Circle), Ring (Flange), etc.

Equivalent Grade of Duplex Steel 2205 Plates

Standard

Werkstoff Nr

UNS

Duplex 2205 Plate

1,4462 / 1,4462

UNS S31803 / UNS S32205

Chemical Composition of Duplex Steel 2205 Plates 

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

Fe

S31803

0.030 max

2.00 max

1.00 max

0.030 max

0.020 max

22.00 - 23.00

3.00 - 3.5

4.50 - 6.50

0.14 - 0.20

63.72 min

S32205

0.030 max

2.00 max

1.00 max

0.030 max

0.020 max

21.0 - 23.0

2.50 - 3.50

4.50 - 6.50

0.8 - 0.20

63.54 min

Mechanical Properties of Duplex Steel 2205 Plates

Grades 

Tensile Strength Ksi (Min)

Yield Strength 0.2 Ksi (Min)

Elongation

Hardness (HB) Max

2205

90

65

25

217