Located in the heart of Hamilton, New Zealand, Hemi Metals is a trusted partner for industry, bringing robust and reliable materials right to our local doorstep. As a dedicated manufacturer and supplier, we take pride in offering high-performance products like our Duplex Steel Square Bar. This material is engineered to meet the toughest challenges, providing an exceptional blend of strength and corrosion resistance that our clients can depend on for their most demanding projects.
This specific grade of Duplex Steel is defined by its balanced composition of chromium, nickel, molybdenum, and nitrogen. This unique mix gives the square bar its remarkable mechanical properties, including very high strength—often double that of standard stainless steels—and outstanding toughness. It also possesses excellent resistance to stress corrosion cracking, making it incredibly durable under pressure and in harsh 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 : Square
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 Square Bars are generally not ideal for cryogenic applications. Their performance may deteriorate at extremely low temperatures, making materials like austenitic stainless steel more suitable for such conditions.
To choose the right Duplex Steel Square Bar, consider factors such as the required strength, corrosion resistance, temperature conditions, and industry-specific demands. Ensure compatibility with your application’s mechanical and environmental requirements.
Yes, Duplex Steel Square Bars require regular inspection, especially in harsh environments. Checking for signs of corrosion, wear, or structural integrity ensures they continue performing optimally in critical applications.
The uses for this versatile square bar are extensive, finding a home in many critical industries. It’s a go-to material for constructing offshore oil and gas platforms, chemical processing plants, and desalination units where saltwater resistance is paramount. Fabricators also value it for creating high-strength structural components, shafts, valves, and fasteners. Essentially, wherever a combination of superior strength and exceptional corrosion resistance is non-negotiable, our Duplex Steel Square Bar delivers reliable performance.
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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