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Duplex Steel Bolts are robust, corrosion-resistant fasteners that shine in tough industrial and marine settings. Made from duplex stainless steel, which blends austenitic and ferritic microstructures, these bolts deliver outstanding mechanical performance and exceptional resistance to stress corrosion, pitting, and chloride-induced corrosion. Suppliers like Aria Fasteners in Hamilton, New Zealand, focus on precise manufacturing and rigorous quality control, ensuring that these bolts provide dependable fastening for structural, chemical, and offshore projects. If you’re looking for long-lasting durability, high load capacity, and resilience against harsh environments, Duplex Steel Bolts are the way to go.
These bolts are crafted from nearly equal parts austenite and ferrite, giving them a distinctive mix of strength, toughness, and corrosion resistance. Their chemical makeup usually includes iron, chromium, nickel, and molybdenum, which boosts their ability to withstand chloride attacks and stress corrosion cracking. On the mechanical side, Duplex Steel Bolts boast high tensile strength, excellent fatigue resistance, and good ductility, making them perfect for heavy-duty connections in challenging environments. With heat treatment and cold working, their mechanical properties are further enhanced, ensuring that they maintain dimensional stability and secure fastening even under extreme loads.
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.
You’ll find Duplex Steel Bolts widely used in offshore platforms, chemical processing plants, desalination facilities, and marine structures where strength and corrosion resistance are paramount. They’re perfect for securing pipelines, structural frameworks, pressure vessels, and machinery that face chloride-rich or highly corrosive conditions. Their impressive load-bearing capacity and resistance to cracking make them ideal for high-pressure, high-temperature applications.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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