Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
| Choose | When | Watch-outs |
|---|---|---|
| S32750 | As named on the datasheet / PO | Confirm A790 vs A789 vs A928 |
| Related UNS | Near-neighbour duplex / super duplex | Do not substitute without design review |
| Duplex hub | Family overview | State PREN / NACE needs |
ASTM A790 UNS S32750 seamless NPS/OD: ____ Wall/Sch: ____ Qty: ____ PREN/NACE: ____ MTC: 3.1/3.2 Destination: ____
Email sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.
Savoy Piping Inc. supplies ASTM A790 S32750 seamless pipe — 25% Cr super duplex for severe chloride / seawater duty with high mechanical strength.
A790 Seamless · A790 Welded · A789 Tube · A928 EFW · Duplex hub
Also see: Duplex & super duplex hub · Duplex buttweld · Duplex flanges.
UNS S32750 seamless pipe for chloride and high-strength duty. typical min yield ~550 MPa (80 ksi), tensile ~800 MPa (116 ksi) — confirm A790/A789.
Use when 2205 PREN/strength is insufficient. Control heat input, ferrite balance and intermetallic precipitation risk — WPS critical.
2507 vs 2205: higher PREN and strength. 2507 vs S32760: both super duplex; S32760 often chosen for specific sour/chloride packages.
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Specification | ASTM A789, ASTM A790, ASTM A928, ASME SA789, ASME SA790, ASME SA928 |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Grades | ASTM A790 / ASME SA790 UNS S32750 |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Outer Diameter Size | Seamless - 1/2" NB TO 18" NB Welded / ERW- 1" NB TO 16" NB EFW - 8" NB TO 110" NB |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Wall Thickness | Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness) |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Ends | Plain Ends / Beveled Ends |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw, Bright Annealed |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Other Testing | Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| ASTM A790 UNS S32750 Super Duplex Stainless Steel Seamless Pipes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
| Elements | C | Cr | Cu | Fe | Mo | Mn | N | Ni | P | S | Si | W |
| Minimum | 24.0 | REMAINDER | 3.00 | 0.24 | 6.00 | 0.20 | 0.50 | |||||
| Maximum | 0.030 | 26 | 0.50 | 5.00 | 1.20 | 0.32 | 8.00 | 0.035 | 0.020 | 0.80 | 1.00 |
| 0.2% Proof Stress (N/mm2 ) [ksi] minimum | 550[79.8] |
| Ultimate Tensile Strength (N/mm2) [ksi] minimum | 800 [116] |
| Elongation (%) minimum | 15 |
| ardness (HBN) | 310 max |
| Reduction of Cross Section Area (%) | 4 |
| Charpy V-notch Impact at ambient Temp (J) [ft.lb] | 80min [59min] |
| Charpy V-notch Impact at -46°C (J) [ft.lb] | 4av, 35min [33av, 25.8min] |
| Additional Testing | |
| ASTM G48A Corrosion test at 40°C | No pitting and weight loss <4.0g /m2 |
| Ultrasonic Testing | According to ASTM A388 |
| Ferrite Content | 35%-55% |
| Microstructure | Microstructure certified free from grain boundary carbides, sigma, chi and laves phases |
| Density (Kg.m-1) | 7810 |
| Magnetic Permeability | 33 |
| Young’s Modulus (N/mm2) | 199 x 103 |
| Specific Heat, 20°C (J.Kg-1.°K-1) | 475 |
| Fracture Toughness, Kq (MPa.m) | 475 |
| Specific Electrical Resistance, 20°C (µO.m) | 0.80 |
| Thermal conductivity, 20°C (W.m-1.°K-1) | 14.2 |
| Mean coefficient of thermal expansion, 20-100°C (°K-1) | 11.1 x 10-6 |
| Alloy Comparisons | S31803 | S17400 (17-4PH) |
718 ( ST) |
S31254 | Alloy 32750 |
| 0.2% Proof Strength (N/mm2), minimum | 40 | 1070 | 550 | 300 | 550 |
| Corrosion Rate (mm.y-1) Seawater | <0.01< /td> | ~1 | <0.01< /td> | <0.01< /td> | <0.01< /td> |
| Corrosion Rate (mm.y-1) 10% sulphuric acid at 80°C |
<0.4< /td> | 10 | >1 | 1.5 | <0.15< /td> |
| Corrosion Rate (mm.y-1) Boiling 50% nitric acid |
<0.15< /td> | <0.15< /td> | <0.15< /td> | 0.4 | <0.15< /td> |
| Wear Properties related to Hardness (HBN) | RC25 | RC38 | RC20 | RC20 | RC28 |
A790 covers seamless and welded ferritic/austenitic stainless pipe. S32750 is 25% Cr super duplex for severe chloride / seawater duty with high mechanical strength.
A790 is pipe; A789 is tube. Keep the product noun matching the datasheet.
typical min yield ~550 MPa (80 ksi), tensile ~800 MPa (116 ksi) — confirm A790/A789
Control heat input and interpass temperature to maintain phase balance and avoid sigma/chi phases.
We supply this product for domestic and export projects with MTC (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, Incoterms and inspection needs on the RFQ.