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Hakan Nickel Alloys, based in Istanbul, Turkey, is a trusted manufacturer and supplier of Super Duplex Steel Coils, designed for industries that demand both strength and superior corrosion resistance. These coils are precision-engineered to ensure excellent surface quality, consistent thickness, and dimensional accuracy. Combining high mechanical strength with outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, Super Duplex Steel Coils perform reliably in the harshest environments. Widely used in chemical, oil and gas, marine, and power industries, Hakan Nickel Alloys delivers coils that meet international standards, providing engineers and manufacturers with a dependable, high-performance solution.
Super Duplex Steel Coils are made from a carefully balanced mix of chromium, nickel, molybdenum, and nitrogen, forming a dual-phase structure of ferrite and austenite. This composition provides excellent corrosion resistance, even in chloride-rich, seawater, and acidic environments. The coils offer high tensile and yield strength, impressive fatigue resistance, and long-term durability. They maintain dimensional stability under high temperatures, pressure, and mechanical stress. Lightweight yet strong, Super Duplex Steel Coils combine corrosion resistance with toughness and reliability, making them ideal for critical industrial, chemical, and marine applications.
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Standard |
ASTM A240 / ASME SA240 |
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Thickness |
0.2mm – 5.0mm |
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Width |
3.2mm – 1500mm |
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Length |
AS PER CUSTOMER’S REQUIREMENT |
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Test Certificate |
Yes |
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Coils Hardness |
Half Hard, Quarter Hard, Soft, Hard, Spring Hard |
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Finish |
Hot rolled Coils (HR), Cold rolled Coils (CR), NO.1, 2B, 2D, 2H, 2R, No.4, HAIRLINE, SCOTCH BRITE, SATIN FINISH, NO.8, BA. |
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Form |
Coil / Strip |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel Coils | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| Super Duplex Steel Coils | 7.8 | 0.281 | 1350 | 2460 |
At Hakan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Coils in Istanbul, Turkey, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Turkey, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Super Duplex Steel Coils are widely used where strength, durability, and corrosion resistance are essential. In oil and gas industries, they are employed in pipelines, risers, and offshore platforms exposed to harsh seawater conditions. Chemical and petrochemical plants use them in tanks, heat exchangers, and reactors handling aggressive chemicals. Marine industries benefit from their resistance to saltwater corrosion in shipbuilding and desalination plants. Power generation sectors apply them in turbines, high-pressure systems, and structural components. With excellent mechanical and anti-corrosion properties, Super Duplex Steel Coils are trusted for high-performance engineering, industrial, and offshore applications requiring long-term reliability.
