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Based in Chennai, India, Kunj Sheets and Plates is a well-known manufacturer and supplier with a focus on premium Super Duplex Steel Sheets and Plates. Kunj has years of experience in the field and provides well-engineered, long-lasting, corrosion-resistant products that satisfy international quality standards. Serving a wide range of customers in different industries, the business is dedicated to providing outstanding performance and enduring dependability. Each sheet and plate is expertly crafted thanks to their cutting-edge manufacturing facilities and stringent quality control procedures. For high-quality Super Duplex Steel solutions that are customised to your project’s precise specifications, Kunj is your go-to partner.
The typical composition of Super Duplex Steel Sheets and Plates is 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and a balanced amount of manganese and nitrogen. Superior corrosion resistance is provided by this composition, especially in marine and chloride environments. Excellent toughness, a tensile strength of over 750 MPa, and a high yield strength of about 550 MPa are among its mechanical characteristics. Even at low temperatures, it offers good fatigue strength and weldability. The alloy performs better due to its balanced austenite and ferrite microstructure, which makes it perfect for high-stress and critical applications.
| Specifications | ASTM A240 / ASME SA240, BS EN 10088-2, en 10028-7, IS 6911 |
| Dimensions | MSRR, AMS, BS, JIS, AISI, ASTM, GB, DIN, EN, etc |
| Size Range | Cold Rolled : 0.5-6.4 mm Hot Rolled : 3.0–10.0 mm |
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc |
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc |
| Thickness | 0.3 mm to 120 mm |
| International Standard of Sheets | ASTM A480 ASTM A959 ASME IID EN ISO 9445 EN ISO 18286 EN 10051 EN 10088-1 ISO 15510 |
| Tolerances (width / thickness | EN 10258/ DIN 59381 EN 10151 EN 10088 |
| Finish | 2B, 2D, BA NO (8), Cold rolled sheet (CR), Hot rolled plate (HR), SATIN (Met with Plastic Coated), No.1 finish hot rolled, 1D, 2B, No.4, BA, 8K, satin, mirror etc. |
| Hardness | Half Hard, Soft, Hard, Quarter Hard, Spring Hard |
| Form | Sheet, Plain Sheet, Flat Shim, Flat Sheet, Shim Sheet, Rolling Sheet, soft annealed, descaled, sheared, annealed |
| Value Added Service | Cladding, Heat Treatment, Annealed, Pickling, Polish, Rolling, Cutting, Bending, Forging, Minor Fabrication Etc. |
| Profiling | Plasma Plate Cutting Laser Plate Cutting Oxy-propane Flame Cutting |
| Element | C | Mn | Si | P | S | Cr | Ni | Mo | N | Fe |
| Super Duplex Steel Pipe Fittings | 0.030 max. | 2.00 max. | 1.00 max. | 0.030 max. | 0.020 max. | 21.0 – 23.0 | 4.50 – 6.50 | 2.50 – 3.50 | 0.08 – 0.20 | 63.54 min |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Super Duplex Steel Pipe Fittings | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Super Duplex Steel Sheets and Plates offer several key advantages, making them ideal for harsh environments. Their excellent corrosion resistance, including resistance to pitting, crevice, and stress corrosion cracking, ensures long-lasting performance in marine, offshore, and chemical processing industries. With a high strength-to-weight ratio, Super Duplex Steel is both strong and durable, providing reliable performance under high-pressure conditions. It also boasts superior weldability, making it easy to fabricate into complex structures. The material’s ability to perform well in extreme temperatures and aggressive chemicals makes it a top choice for critical applications.
Yes, we offer custom sizes for Super Duplex Steel Sheet and Plates to meet specific project needs. Our team at Kunj Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@kunjsheetsandplates.co.in .
| STANDARD | UNS | WERKSTOFF NR. |
| Super Duplex 2507 | S32750 | 1.4410 |
| Sheet & Plate Surface finish | Gauge (in) | Width (max in) |
|---|---|---|
| 2B – Cold rolled, heat treated, pickled, skin passed Plate | 10–24 | 72* |
| 2D – Cold rolled, heat treated, pickled plate | 12–24 | 60 |
| BA Mexinox only | 18–28 | 48 |
| Polished Sheet (not brushed) | 11–24 | 60 |
| Temper rolled Sheet Mexinox only | 13–29 | 48 |
| Plate Thickness (mm) | Weight (kg/m) | kg/meter (width 1200mm) | kg/meter (width 1500mm) | kg/meter (width 1800mm) | kg/meter (width 2400mm) |
| 3 | 23.55 | 28.3 | 35.3 | 42.4 | 56.5 |
| 4 | 31.4 | 37.7 | 47.1 | 56.5 | 75.4 |
| 5 | 39.25 | 47.1 | 58.9 | 70.7 | 94.2 |
| 6 | 47.1 | 56.5 | 70.7 | 84.8 | 113 |
| 8 | 62.8 | 75.4 | 94.2 | 113 | 150.7 |
| 10 | 78.5 | 94 | 118 | 141 | 188 |
| 12 | 94.2 | 113 | 141 | 170 | 226 |
| 16 | 125.6 | 151 | 188 | 226 | 301 |
| 20 | 157 | 188 | 236 | 283 | 377 |
| 22 | 172.7 | 207 | 259 | 311 | 415 |
| 25 | 196.25 | 236 | 294 | 353 | 471 |
| 28 | 219.8 | 264 | 330 | 396 | 528 |
| 32 | 251.2 | 301 | 377 | 452 | 603 |
| 36 | 282.6 | 339 | 424 | 509 | 678 |
| 40 | 314 | 377 | 471 | 565 | 754 |
| 45 | 353.25 | 424 | 530 | 636 | 848 |
| 50 | 392.5 | 471 | 589 | 707 | 942 |
| 55 | 431.75 | 518 | 648 | 777 | 1036 |
| 60 | 471 | 565 | 707 | 848 | 1130 |
| 65 | 510 | 612 | 765 | 918 | 1224 |
| 70 | 549.5 | 659 | 824 | 989 | 1319 |
| 75 | 588.75 | 707 | 883 | 1060 | 1413 |
| 80 | 628 | 754 | 942 | 1130 | 1507 |
| 90 | 706.5 | 848 | 1060 | 1272 | 1696 |
| 100 | 785 | 942 | 1178 | 1413 | 1884 |
Many industries that demand exceptional strength and resistance to corrosion use super duplex steel sheets and plates. They are utilised for pipelines, pressure vessels, and subsea equipment in the oil and gas industry. They are essential to the petrochemical and chemical industries for processing systems, storage tanks, and heat exchangers. Because of their exceptional resistance to seawater, they are used in shipbuilding, offshore platforms, and desalination plants in the maritime industry. These plates are also used in pulp and paper, wastewater treatment, and power generation facilities. They are perfect for demanding structural and mechanical components because of their high durability, weldability, and low maintenance requirements.
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