Based in Hamilton, New Zealand, Hemi Metals has built a solid reputation as a trusted manufacturer and supplier of top-tier industrial materials. Specialising in high-performance alloys, we take pride in offering a comprehensive range of Duplex Steel Hollow Bars. Our commitment is not just to supply a product, but to provide reliable solutions that meet the demanding challenges faced by engineers and fabricators. We understand that durability and precision are paramount, and our materials are sourced and processed to deliver exactly that for projects of any scale.
Duplex Steel Hollow Bar is an exceptional material known for its unique two-phase microstructure, combining the strengths of both austenitic and ferritic stainless steels. This blend gives it an outstanding composition, typically rich in chromium, nickel, molybdenum, and nitrogen. The result is a remarkable set of mechanical properties: it offers nearly double the yield strength of standard stainless grades, along with excellent toughness and superior resistance to stress corrosion cracking. This makes it an incredibly robust and durable choice for challenging 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 : 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.
The impressive strength and corrosion resistance of Duplex Steel Hollow Bar make it a go-to material for a wide array of heavy-duty applications. You’ll commonly find it used in the construction of high-pressure hydraulic systems, robust marine components, and demanding offshore oil and gas platforms. It’s also perfectly suited for chemical processing equipment, large-diameter shafts, and architectural structures that must withstand harsh weather conditions. Essentially, wherever extreme pressure and corrosive elements are a concern, this hollow bar provides a reliable and long-lasting engineering solution.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Hemi Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Hamilton New Zealand
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