Home > Duplex Steel > Duplex Steel Fasteners
At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel Fasteners are designed to offer a dependable combination of high strength, corrosion resistance, and long-term durability. Developed from duplex stainless steel with a balanced austenitic–ferritic microstructure, these fasteners perform exceptionally well in environments exposed to chlorides, mechanical stress, and fluctuating temperatures. Their superior resistance to pitting, crevice corrosion, and stress corrosion cracking makes them a trusted choice for demanding applications. Duplex Steel Fasteners deliver reliable service life, supporting systems where both structural strength and corrosion protection are essential for safe and efficient operation.
Duplex Steel Fasteners are formulated with chromium, nickel, molybdenum, and nitrogen, giving them a unique blend of high mechanical strength and excellent corrosion resistance. Their duplex microstructure provides nearly double the strength of traditional austenitic stainless steels. Enhanced chromium and molybdenum content improves resistance to pitting and crevice corrosion, particularly in chloride-rich environments. These fasteners exhibit high tensile and yield strength, strong fatigue resistance, and reliable toughness across a wide temperature range. Their resistance to stress corrosion cracking further boosts performance in high-pressure and aggressive industrial settings.
| 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 |
| 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 % |
| 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. |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Fasteners in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel Fasteners are used across industries that demand robust, corrosion-resistant components capable of withstanding harsh operating environments. They are widely applied in the oil and gas sector for offshore platforms, subsea pipelines, and processing units exposed to seawater and corrosive chemicals. Chemical processing plants use them in heat exchangers, pressure vessels, and reactors. Desalination plants and marine engineering systems rely on their chloride corrosion resistance, while wastewater treatment facilities value their durability in contaminated and corrosive water streams. Duplex Steel Fasteners are also essential in pulp and paper mills, structural applications, and power generation equipment requiring long-term reliability.
