Luois Metals is a reliable manufacturer and supplier of top-notch Super Duplex Steel Square Bars, proudly based in Houston, USA. We’re known for our precision engineering and unwavering commitment to excellence, serving a variety of industrial sectors with durable and corrosion-resistant Super Duplex Steel products. Our square bars are made from high-quality materials and cutting-edge manufacturing techniques, ensuring they deliver optimal strength and performance. With a focus on our customers, Luois Metals guarantees timely delivery, competitive pricing, and strict adherence to international standards, making us the go-to partner for clients around the world who need dependable Super Duplex Steel solutions.
Super Duplex Steel Square Bars are primarily made up of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), and nitrogen, which gives them outstanding corrosion resistance. These bars boast impressive mechanical strength, with tensile strength ranging from 750–1000 MPa and yield strength around 550 MPa. They also provide excellent impact toughness and fatigue resistance, even in tough environments. The dual-phase microstructure of Super Duplex Steel enhances its durability, making it perfect for demanding structural and mechanical applications where both strength and corrosion resistance are essential.
| Standard | : | ASTM / ASME SA 276 / A 479 |
| Grade | : | UNS S 32750, S 32760 , S 32950 |
| Range | : | 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length. |
| Finish | : | Bright Black Polish |
| Form | : | Rectangle |
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
To maintain Super Duplex Steel Square Bars, clean them regularly to remove contaminants, avoid exposure to extreme temperatures for prolonged periods, and inspect for signs of corrosion or damage in harsh environments.
Yes, Super Duplex Steel Square Bars can be welded using techniques like TIG or MIG welding. Proper preheating and post-weld heat treatment are essential to maintain their corrosion resistance and mechanical properties.
Yes, Super Duplex Steel Square Bars are suitable for natural gas applications due to their excellent resistance to corrosion, high strength, and ability to withstand harsh environments commonly found in the natural gas industry.
You’ll find Super Duplex Steel Square Bars in a variety of applications that require exceptional strength and corrosion resistance. They’re commonly used in offshore oil and gas platforms, marine equipment, chemical processing plants, and desalination systems. These bars are also found in heat exchangers, pressure vessels, and structural components that face aggressive environments. Their remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking makes them ideal for harsh, chloride-rich settings. The durability and mechanical properties of Super Duplex Steel Square Bars make them essential in both industrial and high-performance engineering applications.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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