Duplex & Super Duplex Sheets are used extensively because of their duplex microstructure, which provides a balanced blend of strength and resistance to corrosion. Duplex stainless steels contain 22% chromium, 3% molybdenum, and 5-6% nickel. The Super Duplex stainless steels like UNS S32750 and UNS S32760 contain 25% chromium, 4% molybdenum, and 7% nickel and are used in tougher chemical and marine environments. These grades are in accordance with global specifications like ASTM A240 / ASME SA240 and are the go-to material used in critical industries.

These are superior to austenitic stainless steels in resistance to localized corrosion such as pitting and crevice corrosion, particularly in chloride-rich conditions.

• High resistance to corrosion in aggressive environments, especially against chloride-induced stress.

• Excellent mechanical strength compared to standard stainless steels.

• Superior resistance to fatigue and erosion-corrosion.

• Lower thermal expansion, making them more dimensionally stable in temperature variations.

• Longer service life reduces downtime and replacement costs.

The Duplex & Super Duplex Sheets have a wide application field because of their high strength and corrosion resistance. These tubes have been designed to perform under most strenuous conditions and find their application in the following industries:

• Oil & Gas Industry: Used in offshore platforms, risers, and piping systems where high pressure and corrosion resistance are crucial.

• Petrochemical Industry: Ideal for heat exchangers, reactors, and pressure vessels where extreme temperatures are involved.

• Marine Industry: Widely used for shipbuilding, propellers, shafts, and seawater cooling systems due to high chloride resistance.

• Desalination Plants: Applied in evaporators, brine heaters, and piping systems exposed to saline environments.

• Pulp & Paper Industry: Commonly used for digesters, bleaching equipment, and washing zones resistant to aggressive chemicals.

• Chemical Industry: Employed in reactors, tanks, and pipelines carrying corrosive media like acids and alkalis.

• Construction & Infrastructure: Used in structural components requiring strength and resistance to weathering.

• Pharmaceutical Industry: Applied in sterile equipment where hygiene and corrosion resistance are essential.

• Power Generation: Used in boiler systems, turbines, and condensers exposed to high thermal cycles.

• Water Treatment: Suitable for filtration units, pumps, and pipelines carrying treated or raw water.

The excellent yield strength of these sheets, which is generally twice the strength of austenitic stainless steels, enables material reduction in thickness, which means weight reduction and cost economics. These sheets also possess excellent resistance to cracking by stress corrosion, excellent strength under fatigue, and minimal thermal expansion.

Moreover, they are easily weldable and easy to fabricate, making them the first choice of fabricators and engineers. These benefits have solidified our status as a prominent Duplex & Super Duplex Sheets Manufacturers who are trusted by customers worldwide.

Depending on country and standard, Duplex & Super Duplex Sheets are referred to by different names. In the USA, they're termed under ASTM A240 and ASME SA240. In Europe, Duplex steel is referred to as X2CrNiMoN22-5-3 and Super Duplex as X2CrNiMoCuWN25-7-4 under EN. In Germany, they're termed 1.4462 and 1.4410 under DIN. British Standards refer to them as 318S13 and 325S50 in the UK. In Japan, they're termed SUS329J3L and SUS329J4L under JIS. In Russia, they fall under the classification of GOST under 08Х22Н6Т and 08Х25Н6М2. There are several advantages of using Duplex & Super Duplex Sheets in industry.

Being a leading Duplex & Super Duplex Sheets Stockists, SMM Industries LLP has a vast stock of sheets of various grades and sizes to meet immediate dispatch requirements of urgent and bulk orders. We supply sheets of strict specifications that adhere to international standards, i.e., ASTM A240 / ASME SA240 UNS S31803, S32205, S32750, S32760, backed by traceability and material test certificates.

We are also proud to be known as preeminent Duplex & Super Duplex Sheets Suppliers providing fast delivery and skilled assistance to clients from industries like petrochemical, marine, power, and water treatment. With a robust global presence, we are trusted Duplex & Super Duplex Sheets Exporters providing to clients from the USA, Europe, the Middle East, and Southeast Asia. With a commitment to timeliness of delivery, a focus on consistent quality, and a never-ending concern with client satisfaction, our reputation has been established.