Semih Metals, located in Istanbul, Turkey, is a well-known manufacturer and supplier of top-notch alloy products, including Duplex Steel Round Bars. They really prioritize material performance, precise dimensions, and resistance to corrosion, catering to demanding sectors like oil & gas, petrochemical, marine, pulp & paper, and construction. These Duplex Steel Round Bars are designed to deliver high mechanical strength and exceptional durability in tough environments. Built to comply with international standards, they’re perfect for machining, fabrication, and structural uses. Semih Metals ensures that their Duplex Round Bars come with dependable lead times and solid technical support for clients around the globe.
These bars are crafted from duplex stainless steels, mainly grades like UNS S31803 and S32205. Their chemical makeup features about 22% chromium (Cr), 5–6% nickel (Ni), 3% molybdenum (Mo), and nitrogen (N), which creates a well-balanced austenitic-ferritic microstructure. This unique structure provides impressive tensile strength (usually between 620–850 MPa), which is about double that of standard austenitic stainless steels, along with outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Plus, Duplex Round Bars boast good fatigue strength, weldability, and toughness, making them perfect for both structural and pressure-bearing applications in challenging environments.
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 : Round
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 % |
To select the right Duplex Steel Round Bars, consider factors like corrosion resistance, mechanical strength, temperature conditions, and the specific industry requirements. Consult material specifications and expert advice for optimal selection.
Common grades of Duplex Steel used in round bar manufacturing include 2205 (F51), 2507 (F53), and 2304, each offering varying levels of corrosion resistance, strength, and weldability for specific applications.
Yes, Duplex Steel Round Bars are fully recyclable. Their high-quality composition allows them to be reused in various industries without compromising performance or structural integrity.
You’ll find Duplex Steel Round Bars being utilized in various industries that require high strength and corrosion resistance. They’re commonly used for shafts, flanges, valves, heat exchanger components, fasteners, and structural parts in offshore platforms, desalination plants, and chemical processing systems. Their remarkable resistance to chloride-rich and acidic conditions makes them a great choice for marine and coastal applications. The round shape is especially favored for precision machining and rotating components. Semih Metals is committed to providing high-quality Duplex Round Bars that meet the needs of their customers.
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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