Super Duplex Steel Round Bar Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 and ISO 14001 certified stockist and supplier of super duplex steel round bars in Mumbai, India. We stock Super Duplex 2507 (UNS S32750) and S32760 (UNS S32760) in diameters from 5 mm to 500 mm under ASTM A276 and ASTM A479. Stocked forms include round, hex, square, flat, bright, forged, and hollow bars. All shipments carry EN 10204/3.1B mill test certificates.
Super duplex stainless steel has a 50/50 austenite-ferrite microstructure with 25% chromium, 7% nickel, 4% molybdenum, and 0.20–0.30% nitrogen. This gives a minimum yield strength of 550 MPa (80 ksi) and a PREN above 40. Industries served include offshore oil and gas, subsea engineering, chemical processing, desalination, and marine engineering.
Super Duplex Steel Round Bar Specifications
| Standards | ASTM A276 / ASME SA276; ASTM A479 / ASME SA479; ASTM A182 (F53, F55); ASTM A923 |
|---|---|
| Grades | 2507 (UNS S32750); S32760 (UNS S32760) |
| Diameter | 5 mm to 500 mm |
| Length | 100 mm to 6000 mm (random, fixed, cut-to-length) |
| Bar Shapes | Round, Hex, Square, Flat |
| Finishes | Bright, Black, Rough Turned, Peeled, Centerless Ground |
| Condition | Solution annealed and quenched (min 1050°C) |
| Testing | Tension, Hardness (≤310 HB), ASTM A923, PMI, Charpy (45J at -46°C), Ferrite |
What Are Super Duplex Steel Round Bars?
Types and Forms of Super Duplex Steel Round Bars
Super Duplex Steel Round Bars
Super Duplex Steel Hex Bars
Super Duplex Steel Square Bars
Super Duplex Steel Flat Bars
Super Duplex Steel Forged Bars
Super Duplex Steel Bright Bars
Super Duplex Steel Hollow Bars
Get Super Duplex Steel Round Bars at Competitive Prices
Available Grades of Super Duplex Steel Round Bars
Super Duplex 2507 Round Bar
Super Duplex 2507 is the most widely used super duplex grade. It is a 25Cr-7Ni-4Mo alloy with PREN of about 42 and yield of 550 MPa. This grade resists chloride SCC, pitting, and organic acids. It is covered under ASTM A276 / A479 and ASTM A182 F53.
Super Duplex S32760 Round Bar
Super Duplex S32760 is also known as Zeron 100. It adds tungsten and copper for better crevice corrosion resistance in stagnant seawater. S32760 is covered under ASTM A276 / A479 and ASTM A182 F55.
Industries and Applications of Super Duplex Steel Round Bars
- Offshore Oil and Gas: Manifolds, Christmas tree parts, and bolting.
- Subsea Engineering: Umbilical tubes, risers, and connectors.
- Chemical and Petrochemical: Reactor shafts and acid piping.
- Desalination: RO pump shafts and brine system parts.
- Marine Engineering: Propeller shafts and seawater pumps.
- Power Generation and FGD: Scrubber internals.
- Pulp, Paper, and Mining: Digester shafts and slurry pumps.
