UNS S32750 Super Duplex Stainless Steel Pipe Seamless Cold Drawn ASTM A790 Certified Corrosion Resistant
UNS S32750 (2507) is a super duplex stainless steel designed for demanding applications requiring exceptional strength and corrosion resistance. With higher chromium, molybdenum, and nitrogen content than standard duplex grades, it delivers superior performance in aggressive chloride-rich environments including seawater, brine, and acidic media.
| Grade | C max | Si max | Mn max | P max | S max | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| UNS S32750 | 0.030 | 0.80 | 1.20 | 0.035 | 0.020 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| UNS S32750 | ≥550 | ≥795 | ≥15 | ≤32 |
- PREN (Pitting Resistance Equivalent Number) exceeding 40 for superior chloride resistance
- Outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion
- High mechanical strength allowing thinner wall designs and weight savings
- Excellent fatigue resistance for dynamic loading applications
- Good weldability with appropriate welding procedures and consumables
Ideal for offshore oil and gas platforms, subsea piping systems, seawater cooling systems, desalination plants, chemical processing equipment, flue gas desulfurization systems, and high-pressure hydraulic tubing where maximum corrosion resistance is required.
Strict quality control including PMI testing, chemical analysis, tensile testing, impact testing, hydrostatic testing, ultrasonic testing, and corrosion testing per ASTM G48. Full Mill Test Certificate and ISO TUV SGS third party certifications available.
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