Dhruv Metals provides high-quality Duplex Steel Rectangular Bars in grades like UNS S31803 (Duplex 2205) and S32205, made to ASTM A276 / A479 or ASTM A790 standards. The bars have a balanced austenitic–ferritic microstructure, which provides unparalleled corrosion resistance with high mechanical strength. With precise flatness and width tolerance specifications, they are suitable for critical structural and fabrication jobs where corrosive environments prevail. Dhruv Metals provides rectangular bars in a range of widths and thicknesses with very good surface finish and dimensional stability—perfect for chemical, offshore, and high-chloride use.
Duplex 2205 rectangular bars have ~22–23% Cr, 4.5–6.5% Ni, 3–3.5% Mo, and 0.14–0.20% N. They have tensile strength of 620–655 MPa, yield strength of ~450 MPa, and elongation ≥25%. Hardness is typically around 290 HB. The dual-phase structure of the microstructure doubles the yield strength when compared to 300-series stainless and offers excellent resistance to chloride-induced pitting, crevice corrosion, and stress corrosion cracking. They possess high fatigue strength and stability at both high and low temperatures and are therefore able to withstand cyclic loading conditions.
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.
Duplex Steel Rectangular Bars find applications in offshore platforms, chemical processing modules, desalination plants, and marine bridges. Due to their high strength, thinner and lighter structural elements are used for support frames, gusset plates, fabricated beams, and platform walkways. They are utilized in chemical and petrochemical plants to support pipe racks, skid-mounted frames, and heat exchanger supports. Duplex bars also find application in pressure vessel internals, pump skids, and subsea equipment where exposure to chlorides and resistance against mechanical loads are required for extended service life.
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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