Welcome to Maduka Metals, your trusted partner for premium industrial materials right here in Abuja. We take pride in supplying high-performance Duplex Steel Rectangular Bars, engineered to meet the rigorous demands of modern industry. Our commitment is to provide local businesses with superior-grade products that combine exceptional strength with outstanding corrosion resistance, ensuring your projects are built on a foundation of reliability and durability, backed by our expert, on-the-ground support.
The unique composition of Duplex Steel, a balanced mix of chromium, nickel, molybdenum, and nitrogen, gives these rectangular bars their remarkable character. This blend results in a microstructure that delivers tensile strength almost double that of standard austenitic steels. They offer an excellent yield strength and impressive toughness, making them exceptionally resistant to stress corrosion cracking, which is a common challenge in harsh environments, ensuring long-term structural integrity.
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 : Rectangular
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 Rectangular Bars can withstand moderate to high temperatures, but their performance may degrade at temperatures above 300°C (572°F). For extreme heat, other alloys like austenitic stainless steel are preferred.
Yes, Duplex Steel Rectangular Bar are highly recyclable. Their durable composition allows them to be melted down and repurposed in various applications without significant loss of material properties.
Duplex Steel Rectangular Bars have excellent natural corrosion resistance due to their alloy composition. However, in highly aggressive environments, additional coatings or treatments may be recommended for enhanced protection.
These robust bars are indispensable in environments where both strength and corrosion resistance are non-negotiable. You’ll find them forming the backbone of critical structures in the oil and gas sector, chemical processing plants, and marine applications like offshore platforms. They are also ideally suited for constructing bridges, desalination units, and high-stress architectural components, providing a dependable solution that stands up to aggressive chemicals and saline conditions, ultimately extending the life and safety of your most important investments.
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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