ASTM A928 Grade 1 S32750 is a super duplex stainless steel welded pipe that meets the specific manufacturing and quality requirements outlined in the ASTM A928 standard.
GNEE supplies UNS S32750 stainless steel EFW (Electric Fusion Welded) pipes made from S32750 grade (also known as 2507 super duplex stainless steel). This S32750 (2507) super duplex stainless steel is enriched with high levels of chromium, molybdenum, and nitrogen, which significantly enhance its strength and corrosion resistance. The "Grade 1" designation indicates that the pipe is fabricated using filler metal for double-sided welding, followed by 100% non-destructive testing (either radiographic testing/RT or ultrasonic testing/UT) to ensure flawless welds without defects. After welding, the pipes undergo solution annealing at 1050–1150°C, followed by water quenching, to eliminate residual stresses and balance the dual-phase (ferrite + austenite) microstructure.
ASTM A928 Grade 1 S32750 super duplex stainless steel pipe delivers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments, making it highly suitable for marine applications (e.g., offshore platforms, seawater cooling systems, desalination plants) where high strength and superior corrosion performance are critical.
ASTM A928 UNS S32750 EFW Tube Specification
Standard: ASTM A928 UNS S32750Outside Diameter: 6 mm to 25 mmThickness:0.3mm-50 mm
Length: Upto 6M
Techniques: Hot-rolled / Cold-drawnSchedule: SCH 40 to SCH XXS
Types: EFW / SAW
Processing Service: Bending / Welding /Decoiling /Punching /Cutting
Size range:OD: 3mm - 450mm,Length: 3m/4m/5m/6m,Thickness: 0.5-5mm
ASTM A928 UNS S32750 pipe welding method:GTAW welding,TIG
,Plasma,SAW welding
American standard for OD and thickness:DIN EN ISO 1127,ASTM A999 / A999M,A1016 / A1016M
ASME SA928 S32750 electric welding pipe chemical composition
| Si | C | Mn | S | P | Mo | Cr | N | Ni | Fe |
| 0.80 max | 0.030 max | 1.20 max | 0.020 max | 0.035 max | 3.00 – 5.00 | 24.00 – 26.00 | 0.24 – 0.32 | 6.00 – 8.00 | 58.095 min |
ASTM A928M S32750 EFW pipe mechanical properties
| Hardness [HB] |
Yield strength Rp0.2, MPa |
Elongation [%] |
Tensile strength Rm, MPa |
Impact, Charpy-V, -46ºC [J] |
| ≤ 300 | ≥ 550 | ≥ 25 | ≥ 750 | ≥ 65 |
Physical properties of SA 928 S32750 straight welded pipe
| Properties | Metric |
| Melting point | 1350°C |
| Density | 7.8 g/cm3 |
A928 S32750 EFW welded pipe testing and inspection
Hardness Test
Chemical Analysis – Spectro Analysis
PMI Testing
Flattening Test
Flaring Test
Intergranular Corrosion (IGC) Test
Mechanical Testing
Micro and Macro Test
Pitting Resistance Test
Heat-treatment Option of A928 S32750 electric welding pipe
+NT: Normalized and tempered
+A: Annealed (full/soft/spheroidizing)
+N: Normalized
+P: Precipitation hardened
+QT: Quenched and tempered (water/oil)
+AT: Solution annealed
Refer sizes and price list of ASTM A928M S32750 EFW pipe
ASTM A928M UNS S32750 EFW Pipe Price List (2025)
| Product Type | Price Range (USD) | Details |
|---|---|---|
| Standard Schedule Pipes (Various Sizes) | $1,100 – $2,200 per ton | Prices vary based on size and wall thickness. |
| Surplus 10" Schedule 10S Pipe | $525.28 per unit | 10" OD, Schedule 10S, 100% radiography. |
| Surplus 14" Schedule 10S Pipe | $864.35 per unit | 14" OD, Schedule 10S, 100% radiography. |
| High-Pressure Pipes (Custom Sizes) | $2,000 – $7,000 per ton | Prices depend on custom specifications. |
| Bright Annealed Pipes | $5,200 – $6,700 per ton | High-quality finish for specific applications. |
If you have a project need for ASTM A928 UNS S32750 stainless steel tubing, we welcome your order. GNEE has a large inventory of popular products for you to choose from. Available in both hot-rolled and cold-rolled forms, contact our factory today for detailed chemical composition and free samples. We offer competitive pricing and excellent service.
