Chuck Metals is a reliable manufacturer and supplier of Duplex Steel Rectangular Bars right here in Singapore, providing top-notch stainless solutions to various industries across Pulau Ujong. These bars are highly regarded for their outstanding strength, impressive corrosion resistance, and adaptable shape, making them perfect for both structural and precision applications in tough environments. Crafted to meet standards like ASTM A276 and ASTM A479, our duplex rectangular bars come in a range of sizes, finishes, and tolerances to meet the needs of both industrial and architectural projects.
Typically, Duplex Steel Rectangular Bars are made up of 22–25% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and nitrogen, which gives them a robust ferritic-austenitic microstructure. They boast tensile strengths between 620–900 MPa and yield strengths of 450–620 MPa, nearly double that of standard austenitic stainless steels. These bars excel in resisting pitting, crevice corrosion, and stress corrosion cracking, especially in environments exposed to chlorides or acids.
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.
You’ll find duplex rectangular bars commonly used in sectors like oil & gas, chemical processing, marine, construction, and desalination. Typical applications include base frames, structural components, machined parts, brackets, and support beams. Their flat and elongated shape provides design flexibility, while the duplex structure ensures long-lasting durability, making them a go-to choice for high-load, corrosive, and high-performance applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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