Aung Metals, a reputable manufacturer and supplier located in Naypyidaw, Myanmar, is all about crafting top-notch Duplex Steel Square Bars. These bars are celebrated for their remarkable strength, resistance to corrosion, and long-lasting durability. By employing cutting-edge manufacturing methods and rigorous quality checks, Aung Metals guarantees that each Duplex Steel Square Bar not only meets international standards but also performs reliably in tough industrial and marine settings. These square bars cleverly combine the advantages of austenitic and ferritic stainless steels, providing outstanding toughness, resistance to stress corrosion, and excellent weldability. Aung Metals delivers precision-engineered duplex steel solutions that are perfect for chemical, petrochemical, marine, and offshore applications where high-performance and durability are a must.
When it comes to composition, Duplex Steel Square Bars typically contain around 22% chromium, 5–6% nickel, 3% molybdenum, and a mix of iron, along with small amounts of nitrogen and other alloying elements. This unique blend results in impressive mechanical strength, toughness, and exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. On the mechanical side, these bars boast a tensile strength ranging from 700 to 900 MPa, yield strength between 450 and 550 MPa, and an elongation of 25 to 30%. They also show great ductility, fatigue resistance, and weldability, making them ideal for critical industrial and structural uses.
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 : Square
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 Square Bars are generally not ideal for cryogenic applications. Their performance may deteriorate at extremely low temperatures, making materials like austenitic stainless steel more suitable for such conditions.
To choose the right Duplex Steel Square Bar, consider factors such as the required strength, corrosion resistance, temperature conditions, and industry-specific demands. Ensure compatibility with your application’s mechanical and environmental requirements.
Yes, Duplex Steel Square Bars require regular inspection, especially in harsh environments. Checking for signs of corrosion, wear, or structural integrity ensures they continue performing optimally in critical applications.
Duplex Steel Square Bars are a go-to choice in the chemical, petrochemical, marine, and offshore sectors, thanks to their outstanding corrosion resistance, high strength, and durability. You’ll find them in applications like pump shafts, valves, fasteners, heat exchangers, pressure vessels, and structural components that face harsh and corrosive conditions. They’re also utilized in seawater systems, oil and gas platforms, and industrial equipment where both mechanical strength and corrosion resistance are essential. With Duplex Steel Square Bars, you can count on reliable long-term performance and structural integrity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Aung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Naypyidaw, Myanmar
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