Welcome to Maduka Metals, your trusted partner for industrial materials right here in Abuja. We specialize in supplying high-performance Duplex Steel Square Bars, engineered to meet the toughest challenges. Known for their exceptional strength and remarkable corrosion resistance, these bars are the go-to choice for professionals who demand reliability and longevity from their materials, ensuring your projects are built on a foundation of quality and durability.
The composition of Duplex Steel is a careful balance, blending chromium, nickel, molybdenum, and nitrogen. This unique mix gives the square bars their standout mechanical properties, including very high tensile strength and excellent toughness. They also possess a natural resistance to stress corrosion cracking, making them significantly stronger than many conventional stainless steels while maintaining good formability for fabrication.
Standards : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 10 mm To 100 mm Dia in
Length : 100 mm TO 6000 mm Length.
Specifications : ASTM A276, A479 / ASME SA276, SA479
Form : Square
Finish : Bright, Polish & Black
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| S31803 / S32205 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Duplex Steel Square Bars are generally not ideal for cryogenic applications. Their performance may deteriorate at extremely low temperatures, making materials like austenitic stainless steel more suitable for such conditions.
To choose the right Duplex Steel Square Bar, consider factors such as the required strength, corrosion resistance, temperature conditions, and industry-specific demands. Ensure compatibility with your application’s mechanical and environmental requirements.
Yes, Duplex Steel Square Bars require regular inspection, especially in harsh environments. Checking for signs of corrosion, wear, or structural integrity ensures they continue performing optimally in critical applications.
You’ll find Duplex Steel Square Bars hard at work in some of the most demanding environments. They are essential in the construction of chemical processing plants, offshore oil and gas platforms, and desalination units where saltwater resistance is critical. Fabricators also value them for creating robust structural components, heavy-duty shafts, and high-strength fasteners for the marine and architectural industries, proving their versatility and resilience where failure is not an option.
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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