Maduka Metals, a prominent manufacturer and supplier located in Abuja, Nigeria, specializes in top-notch Super Duplex Steel Bars and Rods. These products are designed for outstanding strength, corrosion resistance, and durability. Crafted to meet international standards, they ensure reliable performance even in the toughest industrial, marine, and chemical settings. Maduka Metals caters to a variety of sectors, including oil and gas, petrochemical, aerospace, and power generation, offering cutting-edge steel solutions. With a focus on precision manufacturing and rigorous quality control, each Super Duplex Steel Bar and Rod boasts exceptional mechanical properties, long-lasting stability, and resistance to pitting, stress corrosion, and chloride-induced cracking, making them perfect for critical high-performance applications.
Super Duplex Steel Bars and Rods are made up of about 22–25% chromium, 5–7% nickel, 3–5% molybdenum, along with trace amounts of nitrogen, manganese, and iron. This unique blend results in a fantastic mix of high tensile and yield strength, toughness, and remarkable resistance to corrosion, including pitting and stress corrosion cracking. On the mechanical side, they showcase a tensile strength ranging from 800–1000 MPa, yield strength between 550–750 MPa, and hardness reaching up to 350 HB. Their impressive strength and corrosion resistance make them ideal for challenging industrial and marine environments.
Specifications : ASTM A276, ASME SA276
Standard : ASTM, ASME
Size : 6 mm to 120 mm.
Length : 1 to 6 Meters, Custom Cut Lengths
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 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 |
| S32760 | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
| Element | S32760 |
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 550 [79.8] |
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 750 [108.8] |
| Elongation (%) minimum | 25 |
| Reduction of Cross Section Area (%) minimum | 45 |
| Hardness (HBN) | 270max |
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex S32750/S32760 | 1.4410 | S32750 / S32760 |
Super Duplex Steel rods are generally resistant to galvanic corrosion due to their high chromium and molybdenum content. However, they can still be susceptible when coupled with highly dissimilar metals in certain environments.
Yes, Super Duplex Steel bars can be welded using appropriate techniques and filler materials. Careful control of heat input and post-weld heat treatment is essential to avoid degradation of their mechanical properties.
Super Duplex Steel rods are available in various sizes, ranging from small diameters to large rods, typically up to 300mm or more. Finishes can include hot-rolled, cold-drawn, polished, or ground, depending on the application requirements.
These Super Duplex Steel Bars and Rods find extensive use in industries that demand materials with high strength, corrosion resistance, and durability. In the oil and gas sector, they are utilized for valves, flanges, pumps, and piping systems that come into contact with chloride-rich environments. The chemical and petrochemical industries rely on them for reactors, heat exchangers, and storage tanks that handle aggressive chemicals. In marine applications, these bars and rods are perfect for offshore platforms, shipbuilding, and desalination plants. Moreover, they are also well-suited for power generation, industrial machinery, and engineering applications where mechanical performance is crucial.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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