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The Fasteners Mart, based in Mumbai, India, is a prominent distributor of high-quality industrial fasteners, providing a wide variety of products to industries such as construction, petrochemical, aerospace, and marine. Among its large inventory, Super Duplex Steel screws are in great demand due to their excellent corrosion resistance, strength, and durability. These screws, made in grades like 2507 and 2205, are engineered to endure harsh conditions. They have different shapes such as hexagonal, socket, and special shapes, thus being suitable for high-pressure, corrosive, and temperature-sensitive applications.
Super Duplex Steel screws are constructed from a blend of 25-30% chromium, 3-5% molybdenum, and 4-7% nickel and have good corrosion resistance and stress cracking resistance. They have a tensile strength of 700 MPa to 1,000 MPa and a yield strength of 500 MPa to 750 MPa. They have superior resistance to pitting, crevice corrosion, and chloride stress corrosion. With good mechanical strength and good performance at high temperatures, they are suitable for challenging conditions like offshore oil rigs, chemical processing, and marine environments.
| 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″ |
| 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 |
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Super Duplex Steel screws are widely applied in industries where high strength and corrosion resistance are both required. They are extensively used in offshore oil and gas platforms, chemical processing plants, desalination plants, and marine environments. These screws hold parts in equipment like heat exchangers, reactors, pressure vessels, and pipelines that are subjected to extreme pressure, temperature, and corrosive conditions. They are particularly prized for their capacity to retain structural integrity and performance in hostile environments with chlorides and acidic materials.
We facilitate the timely and safe delivery of Super Duplex Steel screws by using dependable courier services. Our packaging is with high-quality HDPE bags, corrugated boxes, and wooden crates specifically designed to prevent damage to the screws during transport. Each package is properly sealed to ensure there is no damage, and the fasteners are delivered in mint condition.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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