ASTM A790 UNS S32750 Pipes Manufacturer | Super Duplex 2507 Seamless & Welded Pipe
ASTM A790 UNS S32750 Pipe Manufacturer
We are a manufacturer and exporter of ASTM A790 UNS S32750 super duplex stainless steel pipes, offering high-performance seamless and welded pipes for critical applications in oil & gas, desalination, marine, and chemical processing industries.
Our UNS S32750 (2507) pipes deliver exceptional mechanical strength, superior pitting and crevice corrosion resistance, and excellent performance in aggressive chloride-containing environments.
What is ASTM A790 UNS S32750?
ASTM A790 is the standard specification for seamless and welded ferritic/austenitic stainless steel pipe for general corrosion-resisting and high-temperature service.
ASTM A790 specification covers seamless and straight-seam welded ferritic/austenitic steel pipe for general corrosive service
⬇️ Download ASTM A790-23 standard Latest Edition (PDF)
- Standard: ASTM A790 / ASME SA790
- UNS Designation: S32750 (also known as Super Duplex 2507)
- Pipe Types: Seamless and Welded
- Material: Super Duplex Stainless Steel (25% Cr, 7% Ni, 4% Mo, 0.3% N)
- Applications: High-pressure, high-corrosion environments
UNS S32750 is a super duplex stainless steel alloy that combines the properties of both ferritic and austenitic stainless steels. It is designed for applications that demand exceptional strength and resistance to aggressive corrosion environments—especially those containing chlorides, acidic media, or high-pressure fluids.
Trade name: Super Duplex 2507 UNS: S32750 EN/DIN: 1.4410
A790 UNS S32750 Pipe Specifications
| Property | Value |
|---|---|
| Material Grade | UNS S32750 / 1.4410 / 2507 |
| Standard | ASTM A790 / ASME SA790 |
| Outer Diameter | 1/2” to 24” (Seamless) / up to 48” (Welded) |
| Wall Thickness | SCH 10S to SCH 160 / Custom |
| Length | Single/Double Random, Fixed up to 12m |
| Pipe Ends | Beveled / Plain / Threaded |
| Production Method | Hot/Cold Finished Seamless, Welded |
| Delivery Condition | Solution Annealed, Pickled, Passivated |
UNS S32750 Pipes Mechanical Properties and hardness requirement
| UNS Designation | Type | Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa] | Elongation in 2 in. or 50 mm, min, % | Hardness, max – HBW | Hardness, max – HRC |
| S32750 | 2507 | 116 [800] | 80 [550] | 15 | 300 | 32 |
ASTM A790 S32750 Chemical Composition (%)
| UNS Designation | Type | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu | Others |
| S32750 | 2507 | 0.03 | 1.2 | 0.035 | 0.02 | 0.8 | 6.0–8.0 | 24.0–26.0 | 3.0–5.0 | 0.24–0.32 | 0.5 | … |
ASTM A790 S32750 Pipe Heat Treatment Condition
| UNS Designation | Type | Temperature °F [°C] | Quench |
| S32750 | 2507 | 1880–2060 [1025–1125] | Rapid cooling in water or by other means |
ASTM A790 S32750 Pipe Applications
- Offshore oil & gas platforms
- Desalination plants
- Chemical injection systems
- Marine exhaust & piping
- Pressure vessels and heat exchangers
- Pulp & paper industry
ASTM A790 UNS S32750 Pipe Certifications & Testing
- ASTM A790 / ASME SA790
- EN 10204 3.1 / 3.2 Mill Test Certificates
- NACE MR0175 / ISO 15156 (upon request)
- PMI, UT, RT, Hydrostatic, IGC, Intergranular corrosion tests
- SGS / BV / TUV Third-Party Inspection available
Dimension Tolerance of ASTM A790 S32750 Pipe
Accoridng to ASTM A790,UNS S32750 Pipe Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification A 999/A 999M unless otherwise provided herein.
Wall thickness tolerance
Outside Diameter tolerance of UNS S32750 Pipes
⬇️ Download SA790 standard Now (PDF)
⬇️ Download ASTM A790 UNS S32750 Pipe Specification Now (PDF)
Want to know the differene between ASTM A790 and ASTM A928 ?
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