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At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel Bars are crafted to provide exceptional strength, corrosion resistance, and durability for demanding industrial applications. Made from high-performance duplex stainless steel with a balanced austenitic-ferritic microstructure, these bars resist pitting, crevice corrosion, and stress-corrosion cracking even in chloride-rich and chemically aggressive environments. Manufactured with precision for dimensional accuracy and mechanical reliability, Duplex Steel Bars ensure dependable performance under high-pressure and high-temperature conditions. Ideal for chemical processing, petrochemical, oil and gas, power generation, and marine industries, they offer robust, long-lasting, and high-performance solutions for structural and mechanical applications.
Duplex Steel Bars are primarily composed of chromium, nickel, molybdenum, and nitrogen, forming a balanced austenitic-ferritic microstructure. This composition provides excellent tensile and yield strength, outstanding toughness, and superior resistance to pitting, crevice corrosion, and stress-corrosion cracking. The bars maintain mechanical integrity, dimensional stability, and performance under thermal cycling, high-pressure, and mechanically demanding conditions. Combining corrosion resistance, durability, and high strength, Duplex Steel Bars ensure long-lasting, reliable performance in chemical, petrochemical, offshore, marine, and power generation applications where conventional stainless steels may fail.
| Duplex Steel Bar Standard | ASTM A276, AMS 5513, AMS 5511, AMS 5647 |
|---|---|
| Duplex Steel Bar Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Duplex Steel Round bar size | Diameter: 3-~800mm |
| Duplex Steel Hex Bar size | 2-100mm A/F |
| Duplex Stainless Steel Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Duplex Steel Square bar size | 4 to 100mm |
| Duplex Steel Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Duplex Rectangular Bars Section | 3.0 to 12.0mm thickness |
| Duplex Steel Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| ASTM A276 Type Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Duplex Stainless Steel Threaded Bar Billet Size | 1/2 to 495mm Diameter |
| Duplex Steel Rectangular Size | 33 x 30mm to 295 x 1066mm |
| Duplex Hex Bars Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| ASTM A276 Type Hollow Bar Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| SAF 2507 T-Bar Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| Rolled Duplex Steel Flat Bars Condition | Hardened & tempered, annealed |
| ASTM A276 Type Cold Rolled Bar Technique | Duplex Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Duplex Rod Processing | Bar cutting to 650mm |
| Duplex Rounds Bar Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Grade | UNS No | C % | Cr % | Ni % | P % | Si % | S % | Mo % | N % | Mn % |
| S31803 | S31803 | < 0.03 | 21.0-23.0 | 4.5-6.5 | 1.03 max | 1 max | 0.02 max | 2.5-3.5 | 0.08-0.2 | < 2.0 |
| 2205 | S32205 | < 0.03 | 22.0-23.0 | 4.5-6.5 | 0.03 max | 1 max | 0.02 max | 3.0-3.5 | 0.14-0.20 | < 2.0 |
| Grade | YS (MPa) | UTS (MPa) | % Elongation | Hardness(BHN) |
| S31803 | 450 min. | 620 min. | 25 min. | 293 max. |
| 2205 | 450 min. | 655 min. | 25 min. | 293 max. |
At Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Bars 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 Bars are widely used in industries that require corrosion-resistant, high-strength, and durable metal for structural and mechanical applications. They are essential in chemical and petrochemical plants for manufacturing shafts, fasteners, flanges, and other critical components exposed to acids, chlorides, and oxidizing chemicals. Oil and gas industries utilize these bars in offshore platforms, subsea structures, and high-pressure systems. Power generation facilities employ Duplex Steel Bars in turbines, boilers, and heat exchangers. Marine and desalination plants rely on them for seawater-resistant structural components. These bars ensure dimensional stability, reliable performance, and long-term durability in harsh, high-pressure, and corrosive environments.
