Anucha Metals is a reliable maker and distributor of duplex steel rectangular bars, based in Bangkok, Thailand. With a reputation for manufacturing high-grade stainless steel products, Anucha Metals provides duplex steel rectangular bars that meet demanding international standards. These bars are extensively utilized in industries like chemical processing, oil and gas, marine, and construction, where corrosion resistance and strength are paramount. Through a high emphasis on quality, accuracy, and timely delivery, Anucha Metals has carved out a position as a credible supplier of high-grade duplex steel materials locally and abroad.
Duplex steel square bars are composed of an equal microstructure of austenite and ferrite with 18-28% chromium, 4-6% nickel, and a maximum of 5% molybdenum. This characteristic composition ensures great resistance against stress corrosion cracking, pitting, and crevice corrosion, primarily in environments rich in chlorides. The alloy presents high mechanical strength, good toughness, and superior weldability. The two-phase structure guarantees better performance than common stainless steels, thus the bars are the best for extreme and stressful 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 : 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.
Duplex steel rectangular bars are predominantly employed in chemical reactors, heat exchangers, and piping systems that are subjected to corrosive media. They are also predominantly used in oil and gas applications for offshore platforms, pipelines, and valves as a result of their resistance to corrosion caused by chloride. These bars are also utilized in marine structures, desalination plants, and construction works that necessitate materials that are durable and corrosion-resistant for long-term reliability and safety.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Anucha Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Bangkok, Thailand
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