Duplex Round Bars

Duplex Round Bars – Built for Balance, Strength & Real-World Performance

If you’re tired of choosing between corrosion resistance and mechanical strength, why not go for both? Duplex Round Bars are exactly that solution. Engineered with a dual-phase microstructure (austenite + ferrite), these bars offer an ideal blend of toughness, durability, and corrosion resistance.

From offshore oil rigs to chemical processing plants, Duplex stainless steel has become a go-to material for engineers and designers who don’t want to compromise. These round bars are not just versatile—they’re reliable under pressure, literally.

Trusted Duplex Round Bars Supplier in India for Industrial-Grade Applications

As a leading Duplex Round Bars supplier in India, we know what high-performance environments demand—materials that hold their shape, strength, and integrity even under the harshest conditions. That’s where Duplex steel outperforms traditional stainless grades.

The structure of Duplex steel gives it higher yield strength (almost double) compared to austenitic stainless steels like 304 or 316. It also offers exceptional resistance to chloride stress corrosion cracking, making it perfect for marine and coastal applications, chemical handling systems, and pulp & paper production.

And it doesn’t stop there. These round bars also handle heat better, have great fatigue strength, and maintain stability across pressure fluctuations. In short? Duplex bars aren’t just strong – they’re smart.

Where Duplex Round Bars Are Used

Here’s a look at where these bars prove their worth day after day:

  • Desalination and water treatment plants

     

  • Marine & offshore platforms

     

  • Heat exchangers, boilers & pressure vessels

     

  • Oil & gas exploration pipelines

     

  • Flanges, valves, fasteners & pump shafts

     

  • Pulp and paper bleaching systems

     

  • Food and pharmaceutical processing

Whether it’s exposure to saltwater, acidic chemicals, or thermal cycling—Duplex Round Bars deliver performance without compromise.

 

Technical Breakdown: Duplex Round Bars Composition & Mechanical Properties

Common Grades Available:

  • Duplex 2205 (UNS S31803 / S32205) – The most popular Duplex grade

     

  • Lean Duplex (UNS S32304) – Optimized for mild corrosion resistance

     

  • Super Duplex (UNS S32750 / S32760) – High strength + high corrosion resistance

     

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Duplex (UNS S31803 F51) Round Bars

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Duplex (UNS S32205 F60) Round Bars

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Chemical Composition (%): Typical for Duplex 2205

ElementContent (%)
Chromium21.0 – 23.0
Nickel4.5 – 6.5
Molybdenum2.5 – 3.5
Nitrogen0.10 – 0.22
Manganese2.0 max
Silicon1.0 max
Carbon0.030 max
IronBalance

Mechanical Properties

Property Value
Tensile Strength ≥ 620 MPa
Yield Strength (0.2%) ≥ 450 MPa
Elongation ≥ 25%
Hardness (Brinell) ≤ 290 HB
Density 7.8 g/cm³
Melting Point 1350–1400°C
These stats are more than just numbers—they’re what keep your infrastructure intact under pressure, corrosion, and time.

Size Range & Supply Options

Spec Range/Details
Diameter 6mm – 300mm
Length 1m – 6m (custom cuts available)
Form Round, Square, Hex, Forged Bars
Finish Hot Rolled, Bright, Peeled, Ground
Standards ASTM A276, ASTM A479, ASME SA276
Condition Annealed, Pickled, Machined
We also offer value-added services like CNC machining, third-party inspection, and export-grade packaging.

Why Choose Us as Your Duplex Round Bars Supplier in India?

We’re not just delivering bars—we’re delivering trust, quality, and speed. As a top-rated Duplex Round Bars supplier in India, our goal is simple: support your project with the right material at the right time.

Here’s what you can count on:

Mill Test Certificates (EN 10204 3.1)
 Custom cuts and surface finishes
 Fast dispatch & export packaging
 Project-specific traceability & documentation
 Technical guidance and material alternatives if needed

Whether you’re fabricating a heat exchanger in Mumbai or building a desalination plant in Dubai—we’re equipped to deliver wherever you are.

People Also Search For

Explore our range of duplex and super alloy bars:

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  • Duplex 2205 Round Bars

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