Neil Metals, located in Kolkata, India, has built a solid reputation as a manufacturer and supplier of Super Duplex Steel Rectangular Bars. They cater to industries that require exceptional strength, corrosion resistance, and durability. With a commitment to high-performance materials, Neil Metals provides Super Duplex rectangular bars that adhere to strict international quality standards. The company is recognized for its advanced manufacturing techniques, precise dimensions, and outstanding customer service, serving clients across marine, oil & gas, chemical processing, and power generation sectors. Neil Metals guarantees timely deliveries, custom specifications, and consistent quality to meet the demands of challenging industrial applications.
Super Duplex Steel Rectangular Bars are made up of about 24–26% chromium, 6–8% nickel, 3–5% molybdenum, and a balanced amount of iron, along with some nitrogen and manganese. This unique alloy composition offers remarkable strength and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. The mechanical properties boast a tensile strength of around 800–950 MPa and a yield strength of approximately 550 MPa. These bars also provide high toughness and fatigue strength, along with good weldability and machinability, making them perfect for harsh and corrosive industrial settings.
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.
Super Duplex Steel Rectangular Bars find extensive use in industries that operate under highly corrosive and high-pressure conditions. In the oil and gas sector, they are essential for subsea equipment, manifolds, and offshore platforms due to their resistance to chloride stress corrosion. The marine industry relies on them for propeller shafts, seawater piping systems, and rudder components. Additionally, they are utilized in chemical processing plants, heat exchangers, pulp and paper industries, and desalination units. Their impressive strength-to-weight ratio, corrosion resistance, and durability make them ideal for structural and mechanical applications in extreme operating environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Neil Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kolkata, India
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