Chuck Metals stands out as a top manufacturer and supplier of Duplex Steel Hollow Bars in Singapore, delivering robust and corrosion-resistant solutions to various industries throughout Pulau Ujong and Southeast Asia. These hollow bars are celebrated for their remarkable strength, outstanding resistance to chloride-induced corrosion, and excellent machinability, making them perfect for challenging environments. Crafted to meet specifications like ASTM A511 and ASTM A790, our duplex hollow bars come in a range of sizes and wall thicknesses to cater to different engineering and fabrication requirements.
Typically, Duplex Steel Hollow Bars are made up of 22–25% chromium, 4.5–6.5% nickel, 2.5–3.5% molybdenum, and nitrogen, all of which boost pitting resistance and mechanical strength. They boast yield strengths between 450–620 MPa and tensile strengths of 620–900 MPa, which is nearly double that of standard austenitic stainless steels. The unique dual-phase (ferritic-austenitic) microstructure offers exceptional resistance to stress corrosion cracking, erosion, and fatigue, particularly in chloride-rich or acidic settings.
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 : Hollow
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 % |
Yes, Duplex Steel Hollow Bars can be recycled after use. Their high metal content makes them suitable for reuse in various industrial processes, promoting sustainability and resource efficiency.
Yes, Duplex Steel Hollow Bars are suitable for cryogenic applications due to their excellent toughness, strength, and resistance to brittle fracture at extremely low temperatures.
Yes, Duplex Steel Hollow Bars can be used for underground applications due to their high corrosion resistance, strength, and durability, even in harsh and moisture-prone environments.
These hollow bars find extensive use in sectors like oil & gas, marine, chemical processing, pulp and paper, and hydraulic systems. They are commonly used in machined components, bushings, cylinders, rollers, and pump sleeves, where the hollow cross-section helps reduce weight while maintaining structural integrity. The blend of mechanical strength, corrosion resistance, and material efficiency makes duplex steel hollow bars an excellent choice for both static and dynamic load-bearing 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
Copyright 2024 Chuck Metals. All rights reserved
