Luois Metals is your go-to manufacturer and supplier of Duplex Steel Flat Bars right here in Houston, USA. We take pride in offering top-notch products that are celebrated for their impressive strength, toughness, and resistance to corrosion. Our Duplex Steel Flat Bars are crafted with precision, ensuring they deliver superior dimensional accuracy and consistent performance, even in the toughest environments. Thanks to their unique dual-phase microstructure of austenite and ferrite, these bars not only boast high mechanical strength but also exceptional corrosion resistance, making them perfect for demanding applications in marine, chemical, oil & gas, and structural industries. At Luois Metals, we guarantee timely delivery and dependable service across the globe.
These Duplex Steel Flat Bars are made from a blend of chromium, nickel, molybdenum, and nitrogen, which together provide remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. Their duplex structure gives them nearly double the strength of traditional austenitic stainless steels while still maintaining good ductility and toughness. On the mechanical side, these flat bars showcase high yield strength, excellent fatigue resistance, and durability even under extreme pressure and corrosive conditions, making them ideal for critical applications.
| Size | : | 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length. |
| Standard | : | ASTM A276, A479 / ASME SA276, SA479, ASTM A789 / A789M & ASTM A928 / A928M |
| Grade | : | UNS NO. S 31803, S 32205, S 32550, S 32750, S 32760. |
| Finish | : | Bright, Polish & Black |
| End | : | Flat |
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 |
| Grade | Density | Melting point | Yield strength(0.2% offset) | Tensile strength | Elongation |
|---|---|---|---|---|---|
| S32750/S32760 | 7.8g/cm3 | 1350°C(2460°F) | PSi-80000, MPa-550 | PSi-116000, MPa-800 | 15% |
To maintain Duplex Steel Flat Bars, regularly clean them to remove debris, inspect for corrosion, and apply protective coatings if necessary. Ensure proper storage to prevent exposure to harsh chemicals or extreme conditions.
Yes, Duplex Steel Flat Bars are suitable for natural gas applications due to their excellent corrosion resistance and strength, making them ideal for pipelines and equipment exposed to natural gas environments.
Duplex Steel Flat Bars are partially magnetic due to their ferritic phase. While not as magnetic as pure ferritic steels, they may exhibit some magnetic properties, especially in certain conditions.
You’ll find Duplex Steel Flat Bars being utilized in a variety of industries due to their outstanding properties. In the marine sector, they’re essential for shipbuilding, propeller systems, and seawater handling equipment. The oil & gas industry relies on them for pipelines, offshore rigs, and pressure vessels. In chemical and petrochemical plants, they play a vital role in heat exchangers, process equipment, and storage tanks. Construction and engineering sectors use them in frameworks, bridges, and heavy-duty machinery. With their exceptional balance of strength, durability, and corrosion resistance, Duplex Steel Flat Bars are a trusted choice for long-term industrial applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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