ASTM A182 F53 UNS S32750 WNRF Flanges ASME B16.5 Class 150-2500
Brand Name:YUHONG
Certification:API, PED
Model Number:ASTM A182 F53
Minimum Order Quantity:1PC
Delivery Time:Depends on quantity
Payment Terms:L/C,T/T
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ASTM A182 F53 (UNS S32750) Weld Neck Raised Face Flanges | ASME B16.5 Class 150-2500 | Super Duplex
1. Introduction: Premium Super Duplex Solution
ASTM A182 F53 (UNS S32750) Weld Neck Raised Face (WNRF) Flanges deliver exceptional corrosion resistance and 2X higher strength than standard austenitic stainless steels. Manufactured to ASME B16.5/B16.47 standards, these flanges are ideal for aggressive environments in oil/gas, chemical processing, and offshore applications.
2. Chemical Composition (ASTM A182)
Precise alloy balance ensures pitting/crevice corrosion resistance:
| Element | Min (%) | Max (%) | Key Role |
|---|---|---|---|
| Chromium | 24.0 | 26.0 | Corrosion/Oxidation Res. |
| Nickel | 6.0 | 8.0 | Austenite Stabilizer |
| Molybdenum | 3.0 | 4.0 | Pitting Resistance |
| Nitrogen | 0.24 | 0.32 | Strength & Corrosion Res. |
| Iron | Balance | Matrix | |
| PREN1 | ≥ 40 | Superior to 316L (PREN 25) |
3. Equivalent Grades
Interchangeable specifications for international procurement:
| Standard | Grade | UNS | EN (EU) | Common Names |
|---|---|---|---|---|
| ASTM | F53 | S32750 | - | Super Duplex 2507 |
| EN | 1.4410 | S32750 | X2CrNiMoN25-7-4 | - |
| Others | - | - | Zeron 100® | UR52N+ |
4. Mechanical Properties (Room Temperature)
Combines high strength with ductility:
| Property | Value | Test Standard |
|---|---|---|
| Tensile Strength | 800 MPa (min) | ASTM A182 |
| Yield Strength (0.2%) | 550 MPa (min) | ASTM A182 |
| Elongation | 15% (min) | ASTM A182 |
| Hardness | 290 HBW (max) | ASTM A182 |
| Impact Toughness | ≥ 45 J (-46°C / -50°F) | ASTM A370 |
5. Key Advantages
- Extreme Chloride Resistance: Withstands sour gas (H₂S), seawater, and acids (HCl, H₂SO₄) better than 316L/904L.
- High Pressure/Temp Rating: Suitable for ASME Class 2500 (420 bar) and 300°C (570°F) continuous service.
- Cost Efficiency: 50% thinner sections vs. 316L reduce weight and installation costs.
- Stress Corrosion Cracking (SCC) Immunity: Critical for chemical processing equipment.
6. Application Areas
Designed for critical services in:
- Oil & Gas: Subsea manifolds, christmas trees, pipeline risers
- Chemical: HCl acid reactors, sulfuric acid coolers
- Desalination: SWRO high-pressure tubing, brine heaters
- Pollution Control: FGD scrubber modules
- Marine: Propeller shafts, seawater valves
ASTM A182 F53 UNS S32750 WNRF Flanges ASME B16.5 Class 150-2500
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