#super duplex

India is now an international centre for high-performance alloys, especially Super Duplex 32750/32760. Due to the rising demands from industries such as desalination chemical processing in the marine sector and other exporters such as Tubotechalloys have played a major part in supplying high-quality products to the markets across the globe.

In this article will go over everything you need to know about super Duplex 32750/32760 exports coming from India and the standards of quality as well as the certifications and timeframes for delivery.

What is Super Duplex 32750/32760?

Super Duplex 32750/32760 (also known as UNS S32750/S32760 as well called Alloy2507) is stainless steel composed of high-alloys designed for extremely harsh circumstances. It has excellent strength and exceptional resistance to corrosion specifically in environments with high levels of chloride.

Its composition consists of high concentrations of chromium (24-26 percent) molybdenum and chromium and nitrogen, which improve its resistance to pitting and cracking.

Because of these properties Because of the properties mentioned above, Super Duplex 32750/32760 is widely utilized in:

Offshore platforms for oil and gas

Desalination plants

Chemical processing units

Heat exchangers

Marine engineering

Why India is a Leading Exporter of Super Duplex 32750/32760

India has earned itself a good reputation in the trade of steel and alloys as a result of:

1. Advanced Manufacturing Capabilities

Indian producers employ the most modern manufacturing technology as well as rigorous quality controls to make top-quality super-duplex 32750/32760 products like fittings pipes, flanges, pipes and even plates.

2. Cost-Effective Pricing

In comparison to Western countries, Indian exporters have competitive pricing that don't compromise quality, making them attractive to buyers from overseas.

3. Strong Supply Chain

Indian exporters have inventory in readiness, as well as international logistics networks permit delivery to regions such as those in the Middle East, Europe, Africa and Southeast Asia.

Quality Standards for Super Duplex 32750/32760 Export

Quality is the primary ingredient for the Super Duplex 32750, 32760 and exports to India. Leading exporters like Tubotechalloys ensure that they adhere to international standards, such as:

ASTM & ASME Standards

ASTM A790 / ASME SA790 - Pipes

ASTM A789 - Tubes

ASTM A182-Forged fittings

ASTM A240 - Plates & sheets

These standards ensure that the material meets international standards for strength and mechanical strength as well as resistance to corrosion and dimensional accuracy.

Dimensional & Design Standards

ANSI B36.10 /ANSI B36.10 B36.19 to determine the pipe's dimensions

ASME B16.5 for Flanges

MSS SP specifications for fittings

Mechanical & Chemical Testing

Prior to exporting, Super Duplex 32750/32760 products are processed:

Tensile test for strength

Tests to determine the material's hardness.

Analyzing chemical composition

Testing for corrosion resistance

Manufacturers also ensure that they are adhering to the characteristics that the materials possess, for instance elongation and yield force, which are vital for high-pressure applications.

Certifications Required for Export

Certifications are essential to ensure that you are in compliance and have trust in the international market. Exporters like Tubotechalloys offer a full set of documents to support the Super Duplex 32750/32760 shipment.

Common Certifications Include:

Mill Test Certificate (MTC) - EN 10204 3.1

A NACE-certified certification to applications which make use of our services

ISO Certification (ISO ISO 9001 for quality management)

Third-Party Inspection Reports (TUV, SGS, BV)

Positive Material Identification (PMI) Reports

Radiography Test Reports

These certifications guarantee they are compliant internationally recognized standards, and suitable for use in industrial circumstances.

Lead Times for Super Duplex 32750/32760 Export

Duration of the lead time is an important factor for foreign buyers. Indian exporters can provide quick and flexible delivery dates according to the availability of stock and the size of the order.

Typical Lead Times:

Stock Material: 7-10 days

Custom Manufacturing: 2-4 weeks

Bulk Orders: 3-6 weeks

Some providers can ship fittings within seven to fifteen working days in accordance with the amount of products ordered.

In addition, global shipping times differ

Middle East: 10-15 days

Europe It is three to five weeks.

Africa: 4-6 weeks

Effective packaging labels packaging, export and labeling ensure that your shipment arrives in time.

Packaging & Export Documentation

Reputable exporters like Tubotechalloys follow strict protocols in the packaging and documenting process to ensure there are no delays or damages.

Packaging Standards:

Wooden boxes / pallets

Waterproof wrap

Pipes with end caps

Anti-rust coatings

Export Documents:

Commercial Invoice

Packing List

Certificate of Origin

Bill of Lading / Airway Bill

Inspection Certificates

The right documentation will ensure conformity with international trade regulations and facilitate Customs Clearance.

Applications Driving Global Demand

There is a rising demand for super exports of Duplex 32750/32760 out of India is growing due to its outstanding performance in extreme conditions.

Key Industries:

Oil & Gas Exploration

Offshore Platforms

Power Generation

Desalination & Water Treatment

Chemical Processing

Its durability, strength and resistance against corrosion render it ideal for harsh environments where normal stainless steel isn't employed.

Why Choose Tubotechalloys for Super Duplex 32750/32760 Export?

Tubotechalloys has been identified as an exporter who is reliable because of:

A strict adherence of international norms

Wide product range (pipes, fittings, flanges, plates)

Competitive pricing

Rapid lead times

Global export expertise

With a commitment to the highest standards and satisfaction of customers, Tubotechalloys assures timely delivery of Super Duplex 32750/32760 products around the globe.

The need worldwide for super-duplex 32750/32760 is growing and India is the leader in the production of high-quality products. With stringent quality standards, internationally recognized certifications, as well as fast time-to-markets, exporters such as Tubotechalloys satisfy the requirements of all industries in the world.

In need of a trusted partner to Super Duplex exports of 32750/32760 out of India, Tubotechalloys offers the perfect combination of reliability quality, reliability, and international reach.

1. What exactly is Super Duplex 32750/32760 used for?

Super Duplex 32750/32760 is utilized in the desalination and oil as well as marine and chemical industries due to its resistance to corrosion that is very durable and long-lasting.

2. What are the guidelines that apply to Super Duplex 32750/32760 export?

It is in compliance with ASTM, ASME, and ANSI standards, for example ASTM A790 and A789 for pipes, tubes as well as plates.

3. What certifications are offered in Super Duplex 32750/32760?

Common certifications include EN 10204 3.1 MTC, ISO certification, NACE, PMI reports and third-party inspection reports.

4. What is the time frame that is used for Super Duplex 32750/32760 exports out of India?

Length of lead can vary between 7-10 days for items available in stock. It can take three to four weeks when bulk products are ordered and custom orders.

5. What is the motive behind this? India is a major exporter for Super Duplex 32750/32760?

Heat exchangers remain the backbone of countless process industries. From power stations and petrochemical plants to desalination facilities, they continuously move heat, balance energy, and keep complex systems running. While the overall design of a heat exchanger is impressive, the true secret behind long-term performance is the choice of fittings and material grade.

As we move deeper into 2025, engineers are focusing on three leading contenders for heat exchanger fittings: 304H stainless steel, 316L stainless steel, and Super Duplex stainless steel. Each has its own set of strengths, and selecting the correct one depends on temperature range, corrosion exposure, and lifecycle costs.

Let us dive into the material science that makes each grade valuable.

304H: Reliable Strength at Elevated Temperatures

304H is a high-carbon variation of the standard 304 stainless steel. The “H” designation highlights its reliability for high-temperature service, due to its higher carbon content. This modification enhances its creep resistance and stability when exposed to prolonged heat above 500°C.

Why do engineers select 304H fittings?

a. Solid performance in power and steam service b. More economical compared to higher alloys c. Strong mechanical stability and easy weldability

304H is often found in boiler tubing, power generation exchangers, and superheater components, where durability at sustained high temperatures is critical.

316L: Corrosion Resistance with Smooth Surfaces

316L is the low-carbon grade of 316 stainless steel. The presence of molybdenum sets it apart from the 304 family, providing strong resistance against chloride corrosion and pitting. The “L” indicates low carbon, which prevents carbide precipitation during welding and maintains clean internal surfaces.

Why 316L remains popular?

a. Excellent resistance to chlorides and acidic conditions b. Ideal for welded joints without intergranular corrosion c. Long service life in food, chemical, and seawater environments

316L fittings are widely used in pharmaceutical production, desalination cooling systems, and chemical plants, where cleanability and corrosion resistance outweigh initial cost.

Super Duplex: Strength and Corrosion Resistance Together

Super Duplex stainless steels, such as UNS S32750, combine austenitic and ferritic structures. This dual-phase composition offers double the strength of austenitic grades and unmatched resistance to chloride stress corrosion cracking. Higher chromium, nitrogen, and molybdenum content ensures performance in extreme environments.

Why is Super Duplex chosen?

a. Incredible strength-to-weight ratio, allowing thinner sections b. Outstanding resistance to seawater corrosion and erosion c. Extended lifespan in offshore and high-pressure facilities

Although more expensive and requiring precise welding expertise, Super Duplex fittings offer the best return in marine, oil, and gas projects where conditions are the harshest.

Which One Should You Choose?

There is no universal material that fits every project. The right grade depends on operating temperature, fluid chemistry, and design life.

Choose 304H when the system faces high temperatures with low chloride exposure.

Choose 316L when the environment involves chlorides, mild acids, or hygienic requirements.

Choose Super Duplex when the conditions demand maximum strength and resistance in seawater or aggressive chlorides.

Increasingly, engineers in 2025 are requesting customised fittings in these grades to match wall thickness, pressure ratings, and international standards such as ASME, ASTM, and ISO. Heat exchangers leave no margin for error. A poor choice of material can quickly lead to leaks, corrosion, and expensive downtime. That is why industries around the world rely on 304H, 316L, and Super Duplex stainless steel fittings to handle heat, pressure, and corrosive environments with reliability.

At Online Fittings, we manufacture and supply fittings in all three grades — customised to exact specifications, fully tested, certified, and shipped globally.

Looking for high-quality aluminium products? Riyaarth Overseas provides a wide range of aluminium sheets, plates, and bars that offer exceptional strength, corrosion resistance, and versatility for various industries. Whether you're in construction, automotive, or aerospace, their aluminium solutions are built to last.

Industries need metals that can handle pressure—and UNS S39274 super duplex stainless steel is designed for it.

🔧 Why It’s Trusted: ✅ Withstands extreme corrosion in harsh conditions ✅ Twice the strength of regular stainless steel ✅ Perfect for desalination, offshore rigs, and pipelines ✅ Delivers durability without added weight ✅ Supports thinner structures with the same performance

Looking for a material that’s tough, corrosion-resistant, and built to last? UNS S39274 super duplex stainless steel offers it all.

🔩 Key Advantages: ✅ High tensile and yield strength ✅ Excellent resistance to pitting and crevice corrosion ✅ Ideal for marine, oil & gas, and chemical processing ✅ Long service life with lower maintenance costs ✅ Better performance than 300-series stainless steels

When high performance meets extreme durability, one alloy that stands out in demanding environments is Super Duplex Zeron 100. Developed for applications where corrosion resistance and strength are non-negotiable, Zeron 100 has become a go-to material in sectors like offshore oil & gas, desalination, marine engineering, and chemical processing. In this blog, we take a closer look at what makes Zeron 100 a superior super duplex stainless steel and why it’s the material of choice for critical industrial operations.

What is Super Duplex Zeron 100?

Super Duplex Zeron 100 is a highly alloyed stainless steel with a mixed microstructure of austenite and ferrite. It offers exceptional resistance to corrosion, especially in environments containing chlorides or aggressive chemicals. With higher chromium, molybdenum, and nitrogen content compared to standard duplex steels, Zeron 100 exhibits enhanced mechanical properties and corrosion resistance.

Key Features of Zeron 100

Advantages of Using Zeron 100

1. Superior Strength: Stronger than austenitic or standard duplex steels, reducing material thickness in design. 2. Corrosion Resistant: Performs reliably in harsh environments including seawater, acids, and brine solutions. 3. Long-Term Cost Efficiency: Extended lifespan and reduced maintenance needs due to its durability. 4. Thermal Stability: Maintains structural integrity under high pressure and temperature fluctuations.

Common Industrial Applications

Zeron 100 is used extensively in sectors where durability and corrosion resistance are mission-critical:

1. Oil & Gas: Subsea pipelines, risers, manifolds, and pressure vessels 2. Desalination Plants: High-pressure pumps, piping, and evaporation components 3. Chemical Processing: Reactors, tanks, and acid-handling systems 4. Marine Engineering: Shafts, propellers, and seawater cooling systems 5. Mining: Slurry handling and equipment exposed to aggressive chemicals

Zeron 100 vs Other Duplex Steels

If you’re working in a highly corrosive or mechanically demanding environment, Super Duplex Zeron 100 is one of the most reliable and cost-effective material choices available today. With its excellent mechanical properties, long lifespan, and broad application range, Zeron 100 helps industries achieve optimal performance and safety standards.

Always ensure you procure Zeron 100 from certified metal suppliers who offer material traceability, Mill Test Certificates (MTCs), and expert consultation. Because in challenging environments, the right material isn’t optional — it’s essential.

When comparing UNS S32101 and Super Duplex S32760, it's all about performance under pressure and in corrosive environments.

Here’s a quick breakdown:

UNS S32101 (Duplex 2101): Great for moderate corrosion resistance and cost-efficiency.

Super Duplex S32760: Built for extreme durability and excellent resistance to pitting and stress corrosion.

Duplex and super duplex stainless steels are emerging as the materials of choice for heavy industries, thanks to their unique balance of strength, corrosion resistance, and cost efficiency. As a trusted supplier of high-grade raw materials, Online Fittings is dedicated to helping construction and industrial product manufacturers understand these advanced alloys’ technical merits and application benefits.

Understanding Duplex and Super Duplex Stainless Steel

Duplex Stainless Steel: Duplex stainless steels are characterised by their dual-phase microstructure, a roughly equal mix of austenite (face-centered cubic) and ferrite (body-centered cubic) phases. This hybrid structure is achieved by carefully balancing alloying elements:

1. Chromium (20–28%): Provides a robust passive film that safeguards against uniform and localised corrosion.

2. Molybdenum (up to 3–5%): Enhances resistance to pitting and crevice corrosion, especially in chloride-rich environments.

3. Nickel (typically 4–6%): Stabilizes the austenitic phase, ensuring good toughness and ductility.

4. Nitrogen (0.05–0.50%): Improves strength and further augments the pitting resistance without significantly increasing cost.

A commonly referenced grade is 2205 (UNS S31803/S32205 or EN 1.4462), renowned for its balanced performance in moderately aggressive environments.

Super Duplex Stainless Steel: With higher chromium (approximately 25%) and molybdenum (around 4%) contents, along with increased nitrogen levels, super duplex alloys deliver enhanced mechanical properties and a higher Pitting Resistance Equivalent Number (PREN) often exceeding 40. This makes them ideal for extreme environments such as offshore oil rigs, chemical processing plants, and other applications where aggressive chloride and acid exposures are routine. Grade examples such as 2507 (UNS S32750 or EN 1.4410) offer superior resistance to pitting and crevice corrosion and maintain a yield strength nearly twice that of conventional austenitic stainless steels.

Key Applications in Heavy Industries

1. Oil and Gas: In the oil and gas sector, duplex and super duplex alloys are widely used for:

Pipelines, Risers, and Flowlines: Their resistance to pitting and SCC ensures reliable performance even in deepwater and high-pressure environments.

Offshore Structures: Super duplex stainless steel grades, with superior PREN values, are the material of choice for components exposed to harsh saline and chemical conditions.

2. Chemical and Petrochemical Processing: The corrosive nature of chemical environments demands materials that can withstand both high temperatures and aggressive substances:

Heat Exchangers and Reactors: Duplex stainless steels are ideal for these applications due to their excellent thermal properties and resistance to chemical attack.

Pressure Vessels and Storage Tanks: Their high strength and corrosion resistance ensure the integrity and safety of equipment under continuous operation.

3. Marine and Construction Industries: For construction businesses, particularly those involved in marine infrastructure:

Structural Components: The high strength and corrosion resistance of duplex steels allow for lighter, more durable beams, columns, and reinforcement bars.

Cladding and Fittings: The aesthetic appeal and longevity of duplex stainless steels make them popular for architectural applications where both performance and visual quality are critical.

A Comparative Snapshot