Luois Metals stands out as a top-notch manufacturer and supplier of Duplex Steel Rectangular Bars right in Houston, USA. They pride themselves on delivering high-quality products that are designed for strength, durability, and impressive corrosion resistance. Duplex steel, a unique stainless steel alloy, features a balanced mix of austenite and ferrite, which gives it mechanical properties that outshine those of regular stainless steels. At Luois Metals, precision engineering and strict adherence to international quality standards ensure that their duplex steel rectangular bars are reliable for even the toughest applications. These bars find their place in various industries, including marine, chemical, oil and gas, and construction, where performance and longevity are crucial.
The composition of Duplex Steel Rectangular Bars mainly includes chromium, nickel, molybdenum, and nitrogen, which together create a fantastic balance of strength and corrosion resistance. They boast high tensile and yield strength—almost double that of standard austenitic stainless steels—along with remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking. Plus, duplex steel maintains good weldability and toughness across a wide range of temperatures. These impressive mechanical and chemical properties make duplex rectangular bars the go-to choice for applications that demand strength, resilience against harsh environments, and long-lasting reliability.
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 : Rectangular
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 Rectangular Bars can withstand moderate to high temperatures, but their performance may degrade at temperatures above 300°C (572°F). For extreme heat, other alloys like austenitic stainless steel are preferred.
Yes, Duplex Steel Rectangular Bar are highly recyclable. Their durable composition allows them to be melted down and repurposed in various applications without significant loss of material properties.
Duplex Steel Rectangular Bars have excellent natural corrosion resistance due to their alloy composition. However, in highly aggressive environments, additional coatings or treatments may be recommended for enhanced protection.
In industries that require sturdy materials capable of enduring extreme conditions, Duplex Steel Rectangular Bars are a popular choice. In the marine sector, they’re used in shipbuilding, propeller shafts, and seawater equipment. The oil and gas industry relies on them for pipelines, pressure vessels, and offshore platforms that face chloride-rich environments. In the chemical sector, you’ll find them in heat exchangers, tanks, and processing equipment that handle aggressive chemicals. Additionally, these duplex rectangular bars are essential in structural frameworks, bridges, and construction projects, providing durability, safety, and impressive load-bearing capacity.
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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