Home >Duplex Steel> Duplex Steel Screws
Aisha Nickel Alloys is a trusted manufacturer and supplier of Duplex Steel Screws in Muscat, Oman, offering high-strength fastening solutions for demanding industrial environments. Manufactured using advanced forging and precision machining techniques, these screws provide excellent dimensional accuracy, strong thread integrity, and reliable performance. Aisha Nickel Alloys follows strict international quality standards to ensure consistent quality and long service life. With efficient supply capabilities, timely deliveries, and a customer-focused approach, the company serves oil and gas, marine, chemical, construction, and industrial sectors worldwide.
Mainly composed of iron, chromium (about 22-25%), nickel (about 3-5%), and molybdenum (about 3%), duplex steel chains provide a balanced microstructure of austenite and ferrite These materials provide exceptional strength, period a Tensile strength is typically between 600 and 800 MPa, with excellent resistance to corrosion and stress corrosion cracking the duplex system enhances toughness and fatigue resistance. Advantages include increased strength and weight, excellent durability, and improved corrosion resistance of chloride, making it an ideal candidate for applications in harsh environments.
| Standard | : | ASTM A193, A194 / SA193 / SA194 |
| Dimension | : | ASTM, DIN, BS, GB, IS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Bolts Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Screw Size | : | M02 to M33 | Custom Sizes |
| Heat Treatment | : | Annealing, Stress Relieving, Case Hardening, Quenching and Tempering. |
| Type | : | Hex Bolt/ Hex Screw, Square Head Bolt, U Bolt, Carriage Bolt, Eye Bolt, T Bolt/ J Bolt/ L bolt, Flange Bolt, Coach Screw etc. |
Duplex steel screws are produced from a balanced microstructure of austenitic and ferritic stainless steel, typically alloyed with chromium, nickel, molybdenum, and nitrogen. This composition delivers high tensile and yield strength, superior resistance to stress corrosion cracking, and excellent toughness. Duplex steel offers good fatigue strength, impact resistance, and dimensional stability under high loads and fluctuating temperatures. These screws perform reliably in chloride-rich, corrosive, and high-pressure environments.
Contact us to get a quick quote for your requirement.
Duplex steel screws are widely used in applications where strength, corrosion resistance, and durability are essential. They are commonly used in offshore platforms, marine equipment, and coastal structures due to their excellent resistance to seawater corrosion. In the oil and gas and chemical processing industries, duplex screws are applied in pipelines, pressure equipment, and structural assemblies. They are also suitable for construction, desalination plants, power generation facilities, and heavy engineering projects, ensuring secure fastening and long-term performance in harsh operating conditions.
