N4507 (SUPERDUPLEX 4507 / F61 / UNS S32550) Manufacturer
As a leading manufacturer of UNS S32550 (Ferralium 255) round bars, we are proud to provide a premium range of high-performance super duplex stainless steel products for critical industrial applications. Our UNS S32550 round bars combine exceptional resistance to pitting, stress corrosion cracking, and erosion with high mechanical strength — making them the preferred choice for many heavy-duty environments, from offshore platforms to desalination plants.
Superduplex stainless steel (PREN >= 40) featuring mechanical strength, corrosion resistance and toughness. It features high resistance to pitting corrosion and chloride-rich environments. Used similarly and in slightly less severe applications as the N4501. It complies with NORSOK M650 and M630 MDS D57 for gauges up to 182.00 mm.
- ABTN | ASTM | SAE | AISI: UNS S32550 e F61
- DIN | WNr: 1.4507
- Chemical composition:
Chemical Composition (% max)
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 24.0 – 27.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.9 – 3.9 |
| Copper (Cu) | 1.5 – 2.5 |
| Nitrogen (N) | 0.1 – 0.25 |
| Carbon (C) | ≤ 0.03 |
| Manganese (Mn) | ≤ 1.5 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.02 |
| Iron (Fe) | Balance |
Mechanical Property and Hardness of UNS S32550
| UNS Designation | Type | Condition | Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa] | Elongation in 2 in. [50 mm] or 4D, min, % | Reduction of Area, min, % | Brinell Hardness, max |
|---|---|---|---|---|---|---|---|
| S32550 | … | annealed | 110 [760] | 80 [550] | 15 | … | 297 |
Specifications of UNS S32550 Round bar
- Standard: ASTM A276, ASTM A479, ASME SA276, ASME SA479
- Size range: 10mm–500mm or custom dimensions upon request
- Surface: forged, turned, or polished
- Condition: solution annealed or quenched (depending on application)
Application of S32550 round bar
Our UNS S32550 (Ferralium 255) round bars are frequently used in:
✅ Oil and gas (offshore platforms, subsea equipment)
✅ Desalination and reverse osmosis equipment
✅ Pulp and paper processing machinery
✅ Chemical processing equipment (heat exchanges, pressure vessels)
✅ Marine applications (pump components, propeller shafts)
✅ Power generation facilities (heat exchangers, condenser tubing)
Why our UNS S32550 Round Bars ?
We specialize in manufacturing high-caliber UNS S32550 (Ferralium 255) round bars with extensive industry experience, advanced production facilities, and a strong reputation for delivering quality, precision, and performance. Our team guarantees competitive pricing, custom sizes, fast delivery, and flexible service tailored to your unique project requirements.
