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Sayam Nickel Alloys is a trusted manufacturer and supplier of Duplex Steel Bolts in Hyderabad, offering high-strength fastening solutions for demanding industrial environments. Manufactured using premium-grade raw materials and advanced machining techniques, these bolts provide excellent dimensional accuracy, corrosion resistance, and long service life. Sayam Nickel Alloys follows strict quality control standards and international specifications to ensure consistent performance. Their duplex steel bolts are widely used in applications where durability, secure fastening, and resistance to harsh chemical and high-pressure environments are essential.
| 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″ |
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 % |
Duplex Steel Bolts are produced from alloys with a balanced austenitic and ferritic microstructure. The composition includes chromium, nickel, molybdenum, and nitrogen, which enhance corrosion resistance and mechanical strength. High chromium and molybdenum content provide excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, these bolts offer high yield and tensile strength, good toughness, and fatigue resistance. They maintain structural stability under high pressure, fluctuating loads, and moderate-to-high temperature conditions.
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Duplex Steel Bolts are widely used with nuts and studs in industries requiring strong and corrosion-resistant fastening. Common applications include oil and gas installations, petrochemical plants, chemical processing units, offshore platforms, marine structures, and power generation equipment. They are also employed in pipelines, heat exchangers, pressure vessels, and desalination plants. Due to their superior resistance to chlorides and aggressive environments, duplex steel bolts are ideal for flanged joints, valves, pumps, and structural assemblies where operational safety, durability, and long-term reliability are critical.
