Isis Metals is a reliable manufacturer and supplier of **Duplex Steel Hollow Bars** located in Manila, Philippines. They pride themselves on delivering top-notch duplex stainless steel products that are engineered for outstanding strength, corrosion resistance, and durability. Thanks to their cutting-edge manufacturing technology and rigorous quality control, Isis Metals guarantees that each Duplex Steel Hollow Bar meets international performance standards. These bars are specifically designed for tough applications in chemical, marine, and offshore settings, where high strength and resistance to stress-corrosion cracking are essential. Isis Metals is committed to serving industries both in the Philippines and internationally with dependable, high-performance duplex steel solutions.
**Duplex Steel Hollow Bars** consist of about 22% chromium, 5–6% nickel, 3% molybdenum, and 0.14% nitrogen, with the remainder being iron. This unique dual-phase (austenitic-ferritic) structure offers remarkable mechanical strength, typically providing tensile strength between 620–850 MPa, along with excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Additionally, duplex steel boasts superior toughness and weldability, ensuring long-lasting durability and performance even in high-pressure and high-temperature conditions.
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.
**Duplex Steel Hollow Bars** find extensive use in industries that demand both high strength and corrosion resistance. They are perfect for creating heat exchangers, hydraulic systems, pump shafts, valves, and piping components in chemical processing and offshore applications. In marine environments, they are utilized in seawater systems, desalination equipment, and structural components that are exposed to chlorides. Moreover, Duplex Steel Hollow Bars are also used in the oil and gas, power generation, and paper industries. Their blend of mechanical strength, corrosion resistance, and durability makes them a top choice for critical industrial and engineering applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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