Sadiki Metals, located in Kinshasa, Congo, stands out as a top manufacturer and supplier of Duplex Steel Square Bars. These products are celebrated for their remarkable strength, resistance to corrosion, and impressive durability. Crafted from high-quality duplex steel through cutting-edge production methods, these square bars merge the advantages of both austenitic and ferritic stainless steels, ensuring outstanding mechanical performance. Sadiki Metals is committed to delivering precise dimensions, consistent quality, and compliance with international standards. The Duplex Steel Square Bars find extensive applications in the chemical, petrochemical, marine, and construction sectors, where they reliably perform in tough environments that demand high strength, resistance to stress corrosion, and long-lasting durability.
The composition of these Duplex Steel Square Bars primarily includes iron, chromium, and nickel, along with small amounts of molybdenum, nitrogen, and manganese. This distinctive blend grants them excellent tensile and yield strength, toughness, and corrosion resistance, especially against stress corrosion cracking and pitting in chloride-rich settings. On a mechanical level, duplex steel showcases superior hardness, ductility, and fatigue resistance, making these square bars perfect for structural and industrial uses that require both strength and long-term durability in challenging conditions.
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.
These Duplex Steel Square Bars are widely utilized in various industries, including chemical processing, petrochemical, oil and gas, marine, and construction, thanks to their impressive combination of high strength and corrosion resistance. They are particularly well-suited for creating valve bodies, pump shafts, pressure vessels, structural supports, and fasteners that come into contact with corrosive substances. In offshore and marine settings, they effectively resist seawater corrosion and stress cracking, while in the chemical industry, they adeptly manage acids and alkalis. Furthermore, Duplex Steel Square Bars are also used in industrial machinery, pipelines, and structural frameworks, ensuring reliable performance and longevity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Sadiki Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Kinshasa, Congo
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