Based in the industrious city of Hamilton, New Zealand, Hemi Metals is a trusted manufacturer and supplier dedicated to providing robust materials for demanding applications. Our specialisation in Duplex Steel Round Bar reflects our commitment to quality and durability. We understand that our clients need materials that can perform under pressure, which is why we focus on delivering round bars that combine exceptional strength with superior corrosion resistance, all sourced and supplied with the reliability you can count on.
The strength of Duplex Steel comes from its unique composition, a balanced mix of chromium, nickel, molybdenum, and nitrogen. This blend gives the round bars excellent mechanical properties, including very high tensile and yield strength, making them significantly stronger than standard stainless steels like 304 or 316. Alongside this impressive strength, the material offers outstanding toughness and excellent resistance to stress corrosion cracking, ensuring it holds up in challenging environments where other materials might fail.
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 : Round
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 % |
To select the right Duplex Steel Round Bars, consider factors like corrosion resistance, mechanical strength, temperature conditions, and the specific industry requirements. Consult material specifications and expert advice for optimal selection.
Common grades of Duplex Steel used in round bar manufacturing include 2205 (F51), 2507 (F53), and 2304, each offering varying levels of corrosion resistance, strength, and weldability for specific applications.
Yes, Duplex Steel Round Bars are fully recyclable. Their high-quality composition allows them to be reused in various industries without compromising performance or structural integrity.
The exceptional qualities of Duplex Steel Round Bar make it the material of choice for industries where failure is not an option. You’ll find it extensively used in offshore and marine applications, chemical processing plants, and oil and gas equipment, handling everything from aggressive chemicals to seawater. It’s also ideal for structural components in bridges and buildings in coastal areas, as well as in high-stress parts for the pulp and paper industry. Essentially, it’s the go-to solution for situations demanding both immense strength and long-term corrosion resistance.
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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