Duplex Steel FastenersManufacturer and Supplier in Dubai, UAE
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Majid Fasteners, based in Dubai, UAE, is a leading manufacturer and supplier specializing in high-quality Duplex Steel Fasteners. Renowned for their exceptional strength, corrosion resistance, and durability, these fasteners are ideal for demanding industrial applications across oil & gas, marine, construction, and chemical sectors. With a commitment to precision engineering and stringent quality standards, Majid Fasteners ensures reliable performance in every product. Offering a comprehensive range of sizes and specifications, they cater to diverse client requirements while delivering timely solutions. Their expertise and dedication make them a trusted partner for businesses seeking premium Duplex Steel Fasteners in the UAE and beyond.
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What is Duplex Steel Fasteners?
Duplex Steel Fasteners are made from a balanced composition of approximately 22% chromium, 5–6% nickel, 3% molybdenum, with low carbon content, providing superior corrosion resistance and high strength. These fasteners combine the toughness of austenitic steel with the strength of ferritic steel, offering excellent stress and fatigue resistance. Mechanical properties include a tensile strength of 700–900 MPa, yield strength of 450–600 MPa, and elongation of 25–35%. Their duplex structure ensures resistance to chloride-induced stress corrosion cracking, making them ideal for marine, chemical, and oil & gas applications.
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Duplex Steel Fasteners Specifications
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ NB |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | : | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F6 |
Duplex Steel Fasteners Chemical Composition
| Phosphorus | Sulphur | Silicon | Carbon | Manganese | Nickel | Molybdenum | Nitrogen | Copper | Chromium |
|---|---|---|---|---|---|---|---|---|---|
| 0.035 % max | 0.02 % max | 0.80 % max | 0.03% Max | 1.20 % max | 6.00 – 8.00 % | 3.00 – 5.00 % | 0.24 – 0.32 % | 0.50 % max | 24.0 – 26.0 % |
Duplex Steel Fasteners Mechanical Properties
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| UNS S32750 | 550 min. | 795 min. | 15 min. | 310 max. |
| UNS S32760 | 550 min. | 750 min. | 25 min. | 270 max. |
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Duplex Steel Fasteners Types
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Duplex Steel Fasteners Uses
Duplex Steel Fasteners are widely used in industries requiring high strength and exceptional corrosion resistance. They are ideal for oil and gas pipelines, offshore platforms, and marine equipment due to their resistance to chloride-induced corrosion. In chemical and petrochemical plants, they withstand harsh chemicals and high temperatures. These fasteners are also employed in water treatment facilities, power generation plants, and construction projects where durability and reliability are critical. Their combination of strength and toughness makes them suitable for heavy-duty machinery, pressure vessels, and structural assemblies, ensuring long-lasting performance in demanding industrial and marine environments.
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