Louis Metals supplies premium Super Duplex Steel Hex Bars to satisfy the tough demands of oil and gas, marine, and chemical process industries. These hex bars are made from a special alloy that has the combined best properties of austenitic and ferritic stainless steels. They are highly renowned for possessing high strength, pitting corrosion resistance, and excellent mechanical performance. Our Super Duplex Steel Hex Bars are perfectly suited for the use in critical applications. Regardless of whether it is structural parts, fasteners, or other high-performance applications, Louis Metals promises excellent-quality hex bars that are long-lasting, dependable, and precision-manufactured to satisfy your precise requirements.
Super Duplex Steel Hex Bars contain around 25% chromium, 4% molybdenum, and 7% nickel, with trace amounts of nitrogen and other alloying components. This composition confers superior strength (tensile strength of ~550–800 MPa), pitting, crevice corrosion, and chloride stress corrosion cracking resistance. The hex bars are 250–300 HB hardness and possess good ductility. Due to their superior resistance to corrosive conditions, they also maintain good performance at high temperatures (up to 300°C). Strength and rigidity are increased due to the hexagonal geometry, and hence these bars find successful use in machining and structural applications.
| Standard | : | ASTM / ASME SA 276 / A 479 |
| Grade | : | UNS S 32750, S 32760 , S 32950 |
| Range | : | 10 mm To 100 mm Dia in 100 mm TO 6000 mm Length. |
| Finish | : | Bright Black Polish |
| Form | : | Hexagonal |
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Tensile Strength | 90,000 psi |
| Yield Strength | 50,000 psi |
| Elongation In 2” | 20% |
Reduction of Area | 30% |
Brlnell Hardness | 180-220 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
| Size (inch) | sizes in mm | Thickness (in Inches) | Thickness (mm) |
|---|---|---|---|
| 1-3/16 | 30 | 3/16 – 4/5 | 5 to 20 |
| 1 | 25 | 3/16 – 4/5 | 5 to 20 |
| 1-1/4 | 32 | 1/4 – 4/5 | 6 to 20 |
| 1-7/9 | 45 | 3/16 – 1 | 5 to 25 |
| 1-4/7 | 40 | 3/16 – 1 | 5 to 25 |
| 1-3/8 | 35 | 3/16 – 3/16 | 5 to 20 |
| 2 | 50 | 3/16 – 1-1/4 | 5 to 32 |
| 1-6/7 | 47 | 2/3, 1 & 1-1/4 | 17,25 & 32 |
| 2-1/16 | 55 | 3/16 – 1 | 5 to 25 |
| 2-3/8 | 60 | 3/16 – 1-3/8 | 5 to 35 |
| 7/8 | 22 | 2/3 – 5/7 | 17 & 18 |
| 2-1/4 | 57 | 1-1/4 | 32 |
Yes, Super Duplex Steel Hex Bars are magnetic due to their mixed microstructure of austenite and ferrite, which gives them magnetic properties, though they are less magnetic than ferritic steels.
Yes, Super Duplex Steel Hex Bars are suitable for hygienic and sanitary applications due to their corrosion resistance, durability, and ease of cleaning, making them ideal for industries like food processing and pharmaceuticals.
Super Duplex Steel Hex Bars are less susceptible to galvanic corrosion compared to other materials due to their high corrosion resistance. However, they may still experience galvanic corrosion when in contact with less resistant metals.
Super Duplex Steel Hex Bars are widely utilized in structural uses where high strength and resistance to corrosion are essential. In the petroleum and gas sector, they find application in seawater and aggressive chemical-exposed risers, pipe fittings, and fasteners. Hex bars are trusted by marine engineers for pumps, shafts, and other high-value components exposed to seawater corrosion. Chemical processing industries utilize them in valves, flanges, and heat exchangers in harsh environments. They are also appropriate for automotive and power generation industries where reliability and extended service life are critical.
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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