Luois Metals stands out as a trusted manufacturer and supplier of **Duplex Steel Bars and Rods**, proudly based in Houston, USA. We specialize in high-performance duplex stainless steel products that are renowned for their remarkable strength and resistance to corrosion, particularly in tough industrial and marine settings. By blending the best features of both austenitic and ferritic stainless steels, duplex steel offers exceptional durability, impressive resistance to stress corrosion cracking, and a cost-effective solution. At Luois Metals, we provide these bars and rods in a variety of sizes, finishes, and grades to meet the stringent specifications of various industries.
**Duplex Steel Bars and Rods** boast a unique dual-phase microstructure, made up of roughly equal parts austenite and ferrite. This design results in high mechanical strength—up to twice that of standard austenitic stainless steels—while also providing excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Typical compositions include 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, all of which enhance their outstanding corrosion resistance. These bars and rods are also easy to weld and form, making them perfect for use in corrosive and high-load environments.
| Grade | C | Mn | S | Cr | P | Si | Fe | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|---|
| S31803 | 0.030 | 2.00 | 0.020 | 22.0 – 23.0 | 0.030 | 1.00 | 63.72 min | 3.0 – 3.5 | 6.50 | 0.20 |
| S32205 | 2.50 – 3.50 | 0.8 |
| Grade | Hardness | Tensile Strength | Melting Point | Yield Strength | Density | Elongation |
|---|---|---|---|---|---|---|
| S31803 | 255 | 800 Mpa | 1350 °C (2460 °F) | 450 Mpa | 7.8 g/cm3 | 35 |
| S32205 |
| EN/ DIN/ WNR | 10088-3 |
|---|---|
| AFNOR | Z2CND22.05Az |
| BS (CAST) | 332C15 |
| UNS |
|
| WNR | 1.4462 |
| BS (WROUGHT) | 318S13 |
Yes, Duplex Steel Bars offer excellent corrosion resistance, particularly against stress corrosion cracking, pitting, and crevice corrosion. Their dual-phase microstructure enhances their resistance in harsh environments.
Duplex steel bars perform well in high-temperature environments due to their excellent strength and resistance to oxidation and scaling. Their dual-phase microstructure enhances thermal stability and durability under heat stress.
Yes, duplex steel rods can be customized in size and length to meet specific application requirements. They can be tailored to various dimensions and tolerances for different industries.
These products find their place in a variety of applications, including offshore oil platforms, chemical processing equipment, heat exchangers, pressure vessels, structural supports, and seawater piping systems. The impressive strength-to-weight ratio of duplex steel allows for the creation of thinner, lighter components without sacrificing durability, which can help lower material costs in large-scale projects. Luois Metals offers **Duplex Steel Bars and Rods** in grades like S31803 and S32205, with tailored dimensions and surface finishes to meet the specific needs of your project while ensuring compliance with international standards such as ASTM A276 and A479.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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