Semih Metals, located in Istanbul, Turkey, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Super Duplex Steel Hollow Bars, catering to industries around the globe. Known for their precision engineering and unwavering commitment to international quality standards, Semih Metals produces hollow bars that boast exceptional strength, toughness, and impressive resistance to corrosion. These Super Duplex Steel Hollow Bars are specifically crafted for demanding industrial applications where reliability, durability, and precise dimensions are crucial. With state-of-the-art production facilities and a strong emphasis on quality, Semih Metals guarantees consistent performance, accurate specifications, and timely delivery, offering trustworthy steel solutions for industries that operate in harsh and high-pressure environments.
The composition of Super Duplex Steel Hollow Bars features a well-balanced microstructure of austenite and ferrite, enriched with high levels of chromium (24–26%), nickel (6–8%), molybdenum (3–5%), tungsten, and nitrogen. This distinctive chemical makeup provides remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in environments rich in chlorides and acids. Their mechanical properties include a high tensile strength of around 800–880 MPa, yield strength of about 550 MPa, and excellent toughness even in freezing temperatures. The blend of outstanding corrosion resistance and high mechanical strength ensures long-lasting reliability in critical applications.
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 Hollow Bars can withstand high temperatures due to their excellent strength and corrosion resistance. They are suitable for applications in environments up to around 300°C (572°F), depending on the specific alloy.
Super Duplex Steel Hollow Bars and Rods are manufactured through hot or cold working processes, including extrusion and forging, followed by heat treatment, cold drawing, and precision machining for enhanced strength and corrosion resistance.
Super Duplex Steel Hollow Bars have excellent natural corrosion resistance due to their high chromium and molybdenum content, making additional protective coatings generally unnecessary. However, in highly aggressive environments, coatings may offer extra protection.
Super Duplex Steel Hollow Bars find extensive use in the oil and gas, chemical processing, marine, desalination, and power generation sectors. They are perfect for creating shafts, tubular components, flanges, pump parts, and structural elements that are exposed to harsh chemicals and seawater. Their remarkable durability minimizes maintenance needs and guarantees a long service life. Semih Metals’ Super Duplex Steel Hollow Bars deliver robust, corrosion-resistant, and high-performance solutions for industries that demand strong and dependable materials in challenging operating conditions.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Semih Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Istanbul, Turkey
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