Rupal Metals is a well-known Delhi, India-based manufacturer and supplier of high-grade Super Duplex Steel Round Bars. Due to their superior strength and excellent corrosion resistance, these bars are produced using sophisticated technology to comply with strict industrial standards. Rupal Metals maintains consistent quality by rigorous testing and precise manufacturing, serving various industries like oil and gas, chemical processing, and marine sectors. With excellent customer satisfaction and timely delivery commitment, Rupal Metals is a name of excellence in stainless steel for Super Duplex Steel Round Bars in India and overseas.
Super Duplex Steel Round Bars are largely made of iron and possess balanced proportions of chromium (around 24-26%), nickel (6-8%), molybdenum (3-5%), and nitrogen. This composition confers high strength and superior resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, these bars have a tensile strength of approximately 860-1000 MPa and yield strength of around 550-700 MPa, with good toughness and ductility. Their duplex microstructure, comprising approximately equal fractions of austenite and ferrite phases, bestows improved mechanical behavior in adverse environments.
Specifications : ASTM A276, ASME SA276
Standard : ASTM, ASME
Size : 6 mm to 120 mm.
Length : 1 to 6 Meters, Custom Cut Lengths
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Yes, Super Duplex Steel Round Bars can withstand moderately high temperatures but are not ideal for prolonged use above 300°C, as this may reduce their corrosion resistance and mechanical properties.
Yes, Super Duplex Steel Round Bars are highly recyclable. Their materials, including chromium, nickel, and molybdenum, can be reused, promoting sustainability and reducing waste in industrial applications.
No, Super Duplex Steel Round Bars typically do not require additional corrosion protection coatings, as their high chromium, molybdenum, and nitrogen content provides excellent inherent corrosion resistance in harsh environments.






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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