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Hakan Nickel Alloys, located in Istanbul, Turkey, is a trusted name in the manufacturing and supply of Super Duplex Steel Bolts. Built to perform in the toughest conditions, these bolts combine exceptional strength with superior corrosion resistance. Crafted with precision and tested against international quality standards, they are the perfect choice for industries that demand long-lasting fastening solutions. Whether it’s offshore platforms, chemical plants, or power projects, our Super Duplex Steel Bolts deliver reliability and durability. At Hakan Nickel Alloys, we ensure every bolt reflects our commitment to quality, performance, and customer satisfaction.
Super Duplex Steel Bolts are made from a unique blend of chromium, nickel, molybdenum, and nitrogen, giving them a dual-phase microstructure of ferrite and austenite. This chemistry allows them to resist pitting, crevice corrosion, and stress corrosion cracking even in harsh chloride environments. They offer excellent tensile and yield strength, impressive fatigue resistance, and long-term toughness. These bolts maintain their dimensional stability under pressure, heat, and corrosive chemicals, making them a reliable choice for critical applications where strength and corrosion resistance are equally important.
| Standard | DIN, ASTM, BS and all International Standards |
| Specifications | ASTM A479 & ASME SA479 |
| UNS S32760 Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Length | 3 to 200 MM |
| Super Duplex Steel 2207 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
| Grade | C | Cr | Mn | Mo | N | Ni | P | S | Si | Cu |
| Super Duplex Steel Bolts | 0.04 max | 24.0-27.0 | 1.5 max | 0.1-0.25 | 4.5-6.5 | 6.0-8.0 | 0.040 max | 0.030 max | 1.0 max | 1.5 |
| Tensile Strength(MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | |
| Super Duplex Steel Bolts | 760 | 550 | 15 | 32 Max |
At Hakan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Bolts 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.
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Super Duplex Steel Bolts are widely used in industries where both strength and corrosion resistance are crucial. In oil and gas, they secure pipelines, offshore rigs, and subsea equipment exposed to seawater. Chemical and petrochemical plants rely on them for fastening equipment in aggressive chemical environments. Power generation facilities use them in high-pressure systems and turbines, while desalination plants prefer them for their durability in saline conditions. They are also trusted in marine engineering and construction projects, ensuring long-lasting performance. Wherever conditions are extreme, Super Duplex Steel Bolts provide a fastening solution that engineers and designers can count on.