ASTM A790 UNS S37500 Super Duplex Stainless Steel Seamless Pipe
Price:
Negotiable
MOQ:
100KGS
Delivery Time:
Depends on quantity
Brand:
YUHONG
Product Description
UNS S37500 Super Duplex Stainless Steel Seamless Pipe ASTM A790 Certified Supplier
Product Attributes
| Attribute | Value |
|---|---|
| Hydrotest Pressure | ≥ 100 bar (1500 psi) |
| Purchasing Standard | ASTM A790 + SA 790 |
| EN 10216 Equivalent Grade | 1.4507 |
| Max Service Temperature | 300°C (572°F) |
Product Overview
Our ASTM A790 UNS S3750 (UNS S37500) seamless pipes deliver exceptional pitting/stress corrosion resistance in chloride-rich environments. Manufactured through rotary piercing and cold drawing, these super duplex stainless steel tubes exceed ASTM A790 tolerances for demanding offshore, chemical processing, and FGD applications.
Key Technical Specifications
Chemical Composition (ASTM A790 Table 1)
| Element | Min % | Max % | Typical % |
|---|---|---|---|
| Cr | 24.0 | 26.0 | 25.2 |
| Ni | 6.0 | 8.0 | 6.8 |
| Mo | 3.0 | 4.0 | 3.5 |
| N | 0.20 | 0.30 | 0.25 |
| C | - | 0.03 | 0.02 |
| Mn | - | 1.2 | 0.8 |
| Fe | Balance | - | 62.5 |
Mechanical Properties
| Parameter | Requirement | Test Standard |
|---|---|---|
| Tensile Strength | ≥ 750 MPa | ASTM A370 |
| Yield Strength (0.2% offset) | ≥ 550 MPa | ASTM A370 |
| Elongation (% in 50mm) | ≥ 15% | ASTM A370 |
| Hardness (HBW) | ≤ 310 | ASTM E10 |
| Impact Toughness (-46°C) | ≥ 45 J | ASTM A370 |
Dimensional Tolerances (Per ASTM A790)
| Dimension | Hot-Finished | Cold-Drawn |
|---|---|---|
| OD Tolerance | ±1.0% or ±0.5mm | ±0.5% or ±0.25mm |
| Wall Thickness | +20%/-0% | ±10% |
| Straightness | 3mm/m max | 1.5mm/m max |
Equivalent Standards & Grades
| Region | Standard | Grade |
|---|---|---|
| International | EN 10216-5 | 1.4507 |
| Europe | EN 10088-3 | X2CrNiMoN25-7-4 |
| Japan | JIS G3463 | SUS 329J4L |
| Unified Number | UNS | S37500 |
Key Advantages
- Superior Corrosion Resistance: PREN >40 outperforms 316L in chlorides
- 2X Strength vs. Austenitic SS: Reduces wall thickness/weight
- Thermal Stability: Maintains properties up to 300°C (572°F)
- Weldability: Qualified per ASME IX with ER2594 filler
- Certified Traceability: DNV GL/ABS/PED 2014/68/EU
Primary Applications
| Industry | Critical Use Cases |
|---|---|
| Offshore Oil & Gas | Subsea manifolds, Riser pipes, Christmas trees |
| Desalination Plants | RO membranes, Brine heaters, Evaporator tubes |
| Chemical Processing | Acid coolers, Reactor coils, CIP systems |
| Pollution Control | FGD ducting, Scrubber modules |
| Pulp & Paper | Digester vessels, Bleach plants |
Why Choose Our S3750 Pipes?
- Mill Direct Pricing: Stocked in sizes 1/2" to 24" (Sch 10S to XXS)
- Full Compliance: Supplied with EN 10204 3.2 Certificates
- Specialized Processing: Solution annealing at 1080±20°C + water quenching
- Non-Destructive Testing: 100% UT + Hydrostatic testing per ASTM A1016
- Global Logistics: EXW/FOB/CIF to Americas/Middle East/APAC
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Yuhong Group Co.,Ltd
Location
20TH FLOOR,NO.1 NEW WORLD BUILDING ,NO.1018 MINAN ROAD,YINZHOU DISTRICT, NINGBO CITY, ZHEJIANG PROVINCE, CHINA
Contact Person
Jikin Cai