ASTM A790 UNS S32750 Seamless Stainless Super Duplex Steel Pipe
Nov 28, 2025
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ASTM A790 UNS S32750 Pipes are super duplex stainless steel pipes manufactured according to the ASTM A790 standard, which covers both welded and seamless pipe specifications.
The UNS S32750 seamless pipes are produced via precision cold drawing, ensuring high dimensional accuracy and allowing custom sizing based on client requirements. Each pipe undergoes thorough cleaning and heat treatment before sizing. In contrast, ASTM A790 UNS S32750 welded pipes are produced via hot rolling, offering higher strength. These pipes can be welded using various methods, including plasma welding, multi-point welding, TIG welding, and orbital welding.
All UNS S32750 pipes are supplied in a solution-annealed condition. Their pitting corrosion resistance is typically evaluated using the PREN (Pitting Resistance Equivalent Number), with values exceeding 40, making them suitable for subsea control lines and heat exchangers. They are also widely used in offshore platforms, water injection and ballast systems, and fire-fighting pipelines.
Our S32750 stainless steel pipes comply with ASTM A790 / ASME SA790, EN 10283, and JIS standards, and all products come with ISO 9001, SGS, and BV certifications, along with Mill Test Certificates (MTC 3.1/3.2).
Chemical Composition of UNS S32750
| Element | Requirement (%) |
| Carbon (C), max | 0.03 |
| Manganese (Mn), max | 1.2 |
| Phosphorus (P), max | 0.035 |
| Sulfur (S), max | 0.02 |
| Silicon (Si), max | 0.8 |
| Nickel (Ni) | 6.0–8.0 |
| Chromium (Cr) | 24.0–26.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Nitrogen (N) | 0.24–0.32 |
| Copper (Cu), max | 0.5 |
| Tungsten (W) | 0.50–1.00 |
Mechanical Properties of UNS S32750
| Property | Requirement |
| UNS Designation | S32750 |
| Type | 2507 |
| Tensile Strength, min | 116 ksi [800 MPa] |
| Yield Strength, min | 80 ksi [550 MPa] |
| Elongation, min | 15% |
| Hardness, max (HBW) | 300 |
| Hardness, max (HRC) | 32 |
Heat Treatment Specifications for S32750
| Parameter | Requirement |
| UNS Designation | S32750 |
| Type | 2507 |
| Heat Treatment Temperature | 1880–2060°F (1025–1125°C) |
| Quenching Method | Rapid cooling in air or water |
| Material Standard | ASTM A790/A790M (as referenced in the original table) |
Difference Between UNS S32750 and S32760
| Property | UNS S32760 | UNS S32750 |
|---|---|---|
| Composition (Cr, Ni, Mo) | Ni: 7%, Cr: 25%, Mo: 5% | Ni: 7%, Cr: 25%, Mo: 4% |
| Tensile Strength (MPa) | 800-1050 MPa | 750-1000 MPa |
| Yield Strength (MPa) | 600-750 MPa | 550-700 MPa |
| Elongation (%) | 25% | 25% |
| Hardness (HRC) | 30-35 HRC | 30-35 HRC |
| Pitting Resistance | ≥ 43 (PREN) | ≥ 40 (PREN) |
| Applications | Chemical Processing, Marine, Power Plants, Offshore | Desalination, Chemical Processing, Heat Exchangers, Offshore |
| Workability | Slightly More Resistant to Overstretching Than S32750 | Moderate |
UNS S32750 Super Duplex Pipe Price
| Description | ASTM A790 UNS S32750 pipe Price |
|---|---|
| Uns S32750 1.4410 Duplex Stainless Steel Pipes | US $ 3-3.6 / kg |
| Uns S32750 Duplex Stainless Steel Seamless Pipes | US $ 3-3.6 / kg |
| Seamless Pipe ASME/ASTM SA790 Uns S32750 | US $ 1.9-8.2 / kg |
| Super Duplex, Uns S32750, Wnr 1.4410, Stainless Steel Pipe | US $ 2.6-3.5 / kg |
| Duplex Stainless Steel Pipe 2" Std Uns S32750 Pipe | US $ 580-920 / Ton |
| Uns S32750 Saf 2507 Stainless Steel Seamless Pipe | US $ 500-3000 / Ton |
| ASTM A790 Uns S32750 Seamless Stainless Steel Pipe | US $ 2.5-3 / kg |
| S32750 Super Duplex Stainless Steel Pipe | US $ 799-1299 / Ton |
If you don't mind the hassle, please note that this is GNEE's estimated price for ASTM A790 UNS S32750 steel pipe. Please feel free to contact us for the latest price of UNS S32750 super duplex steel pipe. We offer you the best prices and guarantee product quality!
ASME SA 790 Grade UNS S32750 Pipe Testing
Nondestructive Electric Tests
Hydrostatic Tests
Flattening Tests
Hardening Tests
Tension Tests
We offer free samples for you to verify quality, with sizes ranging from 6mm to 325mm in outer diameter and 0.5mm to 25mm in wall thickness, and lengths up to 12m. Cutting, bending, and polishing services are also available. With highly competitive factory-direct prices, fast delivery (7–15 days), and secure packaging, GNEE ensures a reliable supply for critical industrial projects.
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