Based in the industrious city of Hamilton, Hemi Metals is a trusted local source for high-performance materials, proudly supplying New Zealand industry with precision-engineered Duplex Steel S31803 Bars and Rods. We understand that the backbone of any great project is reliable materials, which is why we focus on providing products that offer a superior blend of strength and corrosion resistance, backed by our commitment to quality and local expertise for engineers and fabricators nationwide.
Duplex Steel S31803 achieves its remarkable properties through a balanced microstructure of austenite and ferrite steels. This unique composition, rich in chromium and nickel with additions of molybdenum and nitrogen, gives these bars and rods an excellent yield strength, significantly higher than standard austenitic grades. They also possess outstanding toughness and excellent resistance to stress corrosion cracking, making them far more durable in demanding environments than many alternatives.
| Standard | ASTM A276, ASME SA276 |
| Round Bar Size | 3mm~ 800mm |
| Square Bar Size | 4mm* 4mm ~100mm* 100mm |
| Flat Bar Size | 2mm ~ 100mm |
| Hex Bar Size | 2mm ~ 100mm |
| Angle Size | 3mm* 20mm* 20mm~ 12mm* 100mm* 100mm |
| Thickness | 50 mm to 6000 mm Long |
| Length | 1 To 6 Meters, Custom Cut Length |
| Form | Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc |
| 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 |
| Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex S31803 | S31803 | 1.4462 |
Yes, Duplex Steel S31803 rods offer excellent corrosion resistance, particularly against pitting, crevice, and stress corrosion. They are ideal for harsh environments, including marine and chemical applications.
Duplex Steel S31803 bars perform well in high-temperature environments, maintaining strength and resistance to oxidation. They are suitable for applications up to approximately 300°C (572°F).
Yes, Duplex Steel S31803 bars can be customized in size and length to meet specific project requirements. Customization ensures flexibility for various industrial applications.
The exceptional strength and corrosion resistance of S31803 Bars and Rods make them a top choice for challenging applications. You’ll often find them in the construction of coastal infrastructure, chemical processing plants, and offshore oil and gas equipment where saltwater and aggressive chemicals are a constant threat. They are also widely used for pumps, valves, and fasteners, proving invaluable wherever components must withstand high pressures and corrosive conditions without failing.
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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