Rupal Metals is a reliable manufacturer and exporter from Delhi, India, dealing in high-quality Duplex Steel Flat Bars. Rupal Metals is known for its excellence and provides superior Duplex Steel Flat Bars that impart high strength and resistance to corrosion. Rupal Metals’ flat bars are carefully designed to fulfill high industry standards, guaranteeing durability and reliability for various industrial uses. Due to advanced manufacturing practices and rigorous quality checks, Rupal Metals serves the requirements of customers in industries ranging from construction, chemical processing, and marine engineering. Customer satisfaction is their prime concern, and hence they are a top player in the steel supply business.
Duplex Steel Flat Bars comprise a well-balanced microstructure with about 50% ferrite and 50% austenite, which merges the optimum characteristics of both phases. Usually containing 18-28% chromium, 4-8% nickel, and traces of molybdenum and nitrogen, these bars provide superior corrosion resistance and great strength. In a mechanical sense, Duplex Steel Flat Bars have a tensile strength of 620-880 MPa and yield strength of about 450-600 MPa. Their special content ensures greater resistance to stress corrosion cracking as well as greater toughness, making them perfect for stringent industrial conditions.
| Size | : | 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length. |
| Standard | : | ASTM A276, A479 / ASME SA276, SA479, ASTM A789 / A789M & ASTM A928 / A928M |
| Grade | : | UNS NO. S 31803, S 32205, S 32550, S 32750, S 32760. |
| Finish | : | Bright, Polish & Black |
| End | : | Flat |
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 |
| Grade | Density | Melting point | Yield strength(0.2% offset) | Tensile strength | Elongation |
|---|---|---|---|---|---|
| S32750/S32760 | 7.8g/cm3 | 1350°C(2460°F) | PSi-80000, MPa-550 | PSi-116000, MPa-800 | 15% |
To maintain Duplex Steel Flat Bars, regularly clean them to remove debris, inspect for corrosion, and apply protective coatings if necessary. Ensure proper storage to prevent exposure to harsh chemicals or extreme conditions.
Yes, Duplex Steel Flat Bars are suitable for natural gas applications due to their excellent corrosion resistance and strength, making them ideal for pipelines and equipment exposed to natural gas environments.
Duplex Steel Flat Bars are partially magnetic due to their ferritic phase. While not as magnetic as pure ferritic steels, they may exhibit some magnetic properties, especially in certain conditions.
Duplex Steel Flat Bars are extensively employed in high-strength and corrosion-resistant industries. They find great use in chemical and petrochemical plants, oil and gas industries, and marine environments where chemicals and seawater exposure is prevalent. Duplex steel flat bars are employed in the production of pumps, valves, heat exchangers, and structural parts demanding longevity and durability. Also, their immunity to chloride stress corrosion cracking makes them well-suited for offshore platforms and desalination plants. Due to their excellent mechanical properties and resistance to corrosion, Duplex Steel Flat Bars offered by Rupal Metals are a sought-after product in a variety of heavy-duty applications.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Rupal Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Delhi, India
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