Yuhong Group Co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 800 Tons/ Month |
| Delivery Time | 15-20 Days |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Standard | ASTM A182 |
| Material Grade | F904L (UNS N08904) |
| Product Type | Slip-On Flange (SO) |
| Face Type | Raised Face (RF) |
| Pressure Class | 150LB, 300LB, 600LB |
| Size Range | 1/2“ to 24” (DN15 to DN600) |
| Brand Name | YUHONG |
| Model Number | ASTM A182 F904L |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 800 Tons/ Month |
| Delivery Time | 15-20 Days | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Standard | ASTM A182 | Material Grade | F904L (UNS N08904) |
| Product Type | Slip-On Flange (SO) | Face Type | Raised Face (RF) |
| Pressure Class | 150LB, 300LB, 600LB | Size Range | 1/2“ to 24” (DN15 to DN600) |
| Brand Name | YUHONG | Model Number | ASTM A182 F904L |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | ASTM A182 F904L stainless steel flange ，high molybdenum super austenitic flange ，slip-on raised face flange for oil gas | ||
ASTM A182 F904L Slip-On Raised Face Stainless Steel Flange High Molybdenum Super Austenitic for Chemical & Oil & Gas Equipment
Backed by 35 years of industrial expertise and a supply network spanning 85 countries, YUHONG Group specializes in engineering and manufacturing critical piping components for the world's most demanding sectors. We combine deep metallurgical knowledge with precision manufacturing to deliver flanges that excel in corrosive and high-stakes environments, such as chemical processing and oil & gas production. Our ASTM A182 F904L Super Austenitic Stainless Steel Slip-On Raised Face Flanges are a testament to this commitment—designed with high molybdenum content for superior chloride and acid resistance, and produced under strict quality controls to meet global standards. When you partner with YUHONG, you gain more than a component; you gain a reliable, long-term solution backed by decades of proven performance.
Heat Treatment Requirements for Grade F904L (UNS N08904)
| Parameter | Specification | Notes |
| Grade (ASTM) | F904L | Super Austenitic Stainless Steel |
| UNS Designation | N08904 | |
| Heat Treat Type | Solution Treat and Quench | Mandatory process |
| Solution Temperature Range | 1920 - 2100 °F [1050 - 1150 °C] | |
| Cooling Media | liquid | Typically water quench |
| Quench Cool Below | 500 °F [260 °C] | |
| Tempering Temperature | Tempering is not required for austenitic grades |
Chemical Composition of Grade 904L (UNS N08904)
| Element | Requirement (%) |
| Carbon (C), max | 0.02 |
| Manganese (Mn), max | 2 |
| Phosphorus (P), max | 0.045 |
| Sulfur (S), max | 0.035 |
| Silicon (Si), max | 1 |
| Nickel (Ni) | 23.0 - 28.0 |
| Chromium (Cr) | 19.0 - 23.0 |
| Molybdenum (Mo) | 4.0 - 5.0 |
| Copper (Cu) | 1.0 - 2.0 |
| Nitrogen (N), max | 0.1 |
Tensile and Hardness Requirements for Grade F904L (UNS N08904)
| Property | Specification / Value | Notes |
| Grade Symbol (ASTM A182) | F904L | Super Austenitic Stainless Steel |
| UNS Designation | N08904 | |
| Tensile Strength, min | 71 ksi | 490 MPa |
| Yield Strength (0.2% Offset), min | 31 ksi | 215 MPa |
| Elongation in 2 in. or 50 mm, min | 35% |
ASTM A182 F904L Slip-On Raised Face Stainless Steel Flange - Key Application Advantages
1. Excellent Corrosion Resistance
F904L is a high-molybdenum super austenitic stainless steel, offering superior performance in environments containing chlorides, acids, and mixed oxidising-reducing media. It is ideal for highly corrosive applications in chemical processing, oil & gas, and seawater systems.
2. High Temperature & Pressure Capability
The material maintains good strength and stability across a wide temperature range. Combined with the reliable seal of the Raised Face (RF) design, it ensures safe, long-term performance in demanding high-pressure piping services.
3 . Cost-Effectiveness & Long Service Life
While the initial investment is higher than standard austenitic steels, its exceptional corrosion and stress corrosion cracking resistance significantly reduces maintenance frequency and replacement costs, offering a lower total cost of ownership over its lifecycle.
4. Easy Installation and Reliable Sealing
The Slip-On (SO) design allows for easy alignment during installation. The Raised Face (RF) is compatible with various gaskets, providing a tight seal and making it suitable for piping sections that require frequent maintenance or inspection.
5 . Global Standard Compliance & Interchangeability
Manufactured in strict accordance with ASTM A182, with dimensions conforming to ASME B16.5 and other major international flange standards. This ensures easy specification, procurement, and integration into global projects.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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