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Fasteners Mart is amongst the leading most exporter and manufacturer of Duplex Steel Nuts based in Mumbai, India. Our nuts are not only high on strength but also anti-corrosive in nature, developed particularly for heavy usages such as marine and chemical and offshore sectors, with need for very high resistance to chloride stress corrosion. With a focus on precision engineering, quality control, and timely delivery, The Fasteners Mart serves customers in domestic as well as global markets. Our Duplex Steel Nuts ensure long-term, trouble-free performance in harsh industrial environments, making us your best bet for critical fastening requirements.
Duplex Steel Nuts contain approximately 22–25% chromium, 5–7% nickel, 3% molybdenum, and nitrogen, with a good balance of microstructure of austenite and ferrite. This renders them very resistant to crevice corrosion, pitting, and stress corrosion cracking in chloride-rich and aggressive environments. From the mechanical point of view, Duplex Steel Nuts possess excellent tensile strength (up to 800 MPa) and yield strength (approximately 450 MPa) along with excellent fatigue and impact resistance. These features render them apt for demanding industrial applications where strength, durability, and corrosion resistance are essential for long-term performance.
| Duplex Steel Nuts | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
| Specifications | ASTM A479 & ASME SA479 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 to 200 MM |
| Duplex Steel Nut and Bolts Size | M3 To M56 3/6″ to 2″ |
| Duplex Steel 2205 Machine Screws Size | M1.6 To M12 |
| Duplex Steel 2205 Washers Size | M3 To M56 3/6″ to 2″ |
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.
Duplex Steel Nuts find widespread use in applications that involve high strength, longevity, and enhanced corrosion resistance. They are preferably utilized in application in offshore petroleum platforms, sea engineering, chemical processing plants, and desalination plants where high exposure to harsh chemicals and high-chloride environments is common.The nuts are used in pressure vessels, heat exchangers, structural steel frames, and pipelines, as well. In power plants and coastal engineering applications, they rely on stress corrosion cracking resistance and pitting assurance for dependability. Duplex Steel Nuts are used for critical fastening in long-term service applications with high pressure and corrosive applications.
At Duplex Steel Nuts at The Fasteners Mart, mechanical, chemical, and non-destructive tests are performed with great scrutiny to ensure that they meet international quality standards. Each nut is thoroughly inspected regarding strength, size, and surface finish. To ensure safe and damage-free delivery, nuts are packed in wooden crates, corrugated boxes, or as per customer requirements. Shield covering and transparent marking prevent corrosion, contamination, and handling damage, enabling the nuts to reach intact condition, ready for reliable industrial application.
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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