Dhruv Metals provides high-quality Duplex Steel Square Bars made from premium grades like UNS S31803 and S32205. These bars combine the advantages of ferritic and austenitic stainless steels, providing better strength, corrosion resistance, and excellent weldability. Available in custom and standard sizes, Duplex square bars are perfect for structural applications where mechanical strength and resistance to chloride corrosion matter. Dhruv Metals supplies square bars to ASTM A276 and other global standards for the oil and gas, marine, and construction industries.
Duplex steel square bars usually contain about 22% Cr, 5% Ni, 3% Mo, and 0.15–0.2% N. They offer a tensile strength of 620–750 MPa, a yield strength of 450 MPa, and an elongation of roughly 25%. The alloy is resistant to stress corrosion cracking, pitting, and crevice corrosion, maintaining strong performance in acidic and high-chloride conditions. The square shape adds rigidity and simplifies fabrication in load-bearing structures.
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.
Duplex Steel Square Bars are utilized in offshore platforms, heat exchanger supports, bridge structures, and chemical plant supports. In the marine sector, they are suitable for deck fittings, guard rails, and dock structures. Their strength and corrosion resistance make them suitable for architectural pieces, railings, and industrial walkways. These bars also find use in pumps, shafts, and mechanical assemblies where strength and corrosion resistance are essential. Dhruv Metals ensures square bars meet both structural and aesthetic needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Dhruv Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hyderabad , India
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