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Russ Fasteners is your go-to manufacturer and supplier of top-notch Duplex Steel Bolts right here in Singapore, Pulau Ujong. We specialize in providing corrosion-resistant fastening solutions that thrive in tough industrial settings. Our Duplex steel bolts blend the robust strength of ferritic steels with the impressive corrosion resistance of austenitic stainless steels, making them perfect for demanding offshore, chemical, and marine applications. Each bolt is precision-engineered to meet international standards like ASTM A182 and A479, ensuring they deliver outstanding mechanical performance and a long lifespan. At Russ Fasteners, we’re dedicated to supplying bolts that can handle high pressure, corrosive environments, and extreme temperatures with unwavering reliability and consistent quality.
Duplex Steel Bolts are typically made up of about 22–25% chromium, 4.5–7% nickel, 3–5% molybdenum, along with small amounts of nitrogen, manganese, and silicon. This unique dual-phase microstructure provides exceptional mechanical strength and resistance to stress corrosion cracking, pitting, and crevice corrosion. With a high tensile strength ranging from 620–900 MPa and a yield strength that’s nearly double that of standard austenitic stainless steels, these bolts are perfect for load-bearing applications. They also boast good weldability and toughness, even in low temperatures, ensuring reliable performance in high-pressure and corrosive environments like seawater and aggressive chemical processing plants.
Duplex Steel Bolts | 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 bolts are widely used in demanding industries due to their strength and corrosion resistance. They are ideal for applications in marine environments, offshore oil and gas platforms, chemical processing, and construction. Their robust properties make them suitable for critical structural components, pressure vessels, and high-stress assemblies. Additionally, these bolts are used in water treatment facilities and power plants, where resistance to harsh conditions is essential. Their versatility and durability ensure reliable performance in various industrial settings.
Duplex Steel Bolts are extensively utilized in critical applications where strength and corrosion resistance are paramount. Industries such as offshore oil and gas, marine, desalination, petrochemical, power generation, and chemical processing rely on these bolts for pipelines, pressure vessels, structural joints, and heat exchangers. Their exceptional resistance to chloride stress corrosion makes them ideal for equipment exposed to seawater, subsea platforms, and coastal infrastructure. Duplex bolts are truly the unsung heroes in environments where durability and reliability are non-negotiable.
Russ Fasteners is a leading manufacturer and supplier of high-quality fasteners in Pulau ujong, Singapore , with over 12 years of experience serving global industries.
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