Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A182 F53 Super Duplex Stainless Steel Coupling High Pressure and Corrosion Resistant for Oil & Gas Applications
YUHONG GROUP leverages 35 years of industrial expertise and a global presence spanning 85 countries to deliver premium ASTM A182 F53 Super Duplex Stainless Steel Couplings. Our products are engineered to meet the most demanding oil & gas applications, combining superior corrosion resistance with exceptional mechanical strength.
Heat Treatment Specifications for Grade F53 (UNS S32750)
| Parameter | Specification | Notes |
| Grade | F53 | Super Duplex Stainless Steel |
| UNS Designation | S32750 | |
| Heat Treat Type | Solution Anneal | Also known as Solution Treat and Quench |
| Solution Annealing Temperature | 1925-2150°F [1050-1175°C] | Must be within this specified range |
| Cooling Media | Liquid or Rapid Cool | Ensures proper microstructure |
Chemical Composition of Grade F53 (UNS S32750)
| Element | Requirement (%) | Notes |
| Carbon (C) | 0.030 max | |
| Manganese (Mn) | 1.20 max | |
| Phosphorus (P) | 0.035 max | |
| Sulfur (S) | 0.020 max | |
| Silicon (Si) | 0.80 max | |
| Chromium (Cr) | 24.0–26.0 | |
| Nickel (Ni) | 6.0–8.0 | |
| Molybdenum (Mo) | 3.0–5.0 | |
| Copper (Cu) | 0.50 max | |
| Niobium (Nb) | 0.15–0.45 | Stabilizing element |
| Tungsten (W) | 1.50–2.50 | Enhances pitting resistance |
Mechanical Properties of Grade F53 (UNS S32750)
| Property | Specification | Notes |
| Grade | F53 | Super Duplex Stainless Steel |
| UNS Designation | S32750 | |
| Material Type | Ferritic-Austenitic (Duplex) Stainless Steel | |
| Tensile Strength, min | Class 1 (Thickness ≤ 2 in. [50 mm]):114 ksi [785 MPa] | Different requirements based on thickness and class |
| Class 2 (Thickness ≤ 2 in. [50 mm]):116 ksi [800 MPa] | ||
| Thickness > 2 in. [50 mm]:106 ksi [730 MPa] | ||
| Yield Strength (0.2% Offset), min | Class 1 (Thickness ≤ 2 in. [50 mm]):76 ksi [525 MPa] | |
| Class 2 (Thickness ≤ 2 in. [50 mm]):80 ksi [550 MPa] | ||
| Thickness > 2 in. [50 mm]:75 ksi [515 MPa] | ||
| Elongation in 2 in. or 50 mm, min | Class 1:30% | |
| Class 2:15% |
Key Advantages of ASTM A182 F53 Super Duplex Stainless Steel Coupling
1. High Strength & Pressure Resistance
Manufactured from ASTM A182 F53 super duplex stainless steel, it offers excellent mechanical strength and can withstand high-pressure conditions, making it ideal for demanding oil and gas applications.
2. Superior Corrosion Resistance
Provides outstanding resistance to corrosion in oil and gas environments, including resistance to chloride stress corrosion cracking, ensuring long-term durability and reduced maintenance.
3. Excellent Value for Critical Applications
Combines high strength with exceptional corrosion resistance, offering a cost-effective and reliable solution for pressure piping systems in sour service and offshore conditions.
