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ASTM A182 F904L SO RF Stainless Steel Flanges Bridas
YUHONG Group can offer ASTM A182 F904L slip-on RF stainless steel flanges / bridas, and our products sell more than 70 countries up to now.
ASTM A182 This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves, and similar parts to specified dimensions or to dimensional standards.
SS 904L is a super austenitic stainless steel(UNS: N08904; EN: 1.4539), which is used for various high corrosion resistance environment design. and it is a high-alloy austenitic stainless steel with low carbon content. It has good corrosion resistance in dilute sulfuric acid and is specially designed for corrosion conditions. Designed for harsh environments. With high chromium content and sufficient nickel content, the addition of copper makes it have strong acid resistance, pitting resistance is slightly better than other steel types, has good machinability and weldability, and can be used for pressure container
Specification of ASTM A182 F904L
| Type | Slip-On;Welding-Neck;Blind;Thread;Plate;Socket-Weld,etc |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/2″ to 48″NB |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Flange Dimension Standard | Standard - ANSI - ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, and ANSI B16.48 |
| Flange Value Added Service | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| Coating Flanges Face | Zinc Plated, Yellow Transparent, Anti-rust Paint, Cold and Hot Dip Galvanized, Oil Black Paint |
| Flange Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
Tests Required
Grain Size/Tension Tests/ Hardness Tests/ Corrosion Testing for Austenitic Grades/ Nondestructive Tests
Equivalent Material
| STANDARD | WERKSTOFF NR. | UNS |
| SS 904L | 1.4539 | N08904 |
Chemical Composition of ASTM A182 F904L
| ELEMENT | COMPOSITION (%) |
| Carbon | 0.02 |
| Manganese | 2.00 |
| Phosphorus | 0.040 |
| Sulfur | 0.030 |
| Silicon | 1.00 |
| Nickel | 23.0-28.0 |
| Chromium | 19.0-23.0 |
| Molybdenum | 4.0-5.0 |
| Nitrogen | 0.1 |
| Copper | 1.00-2.00 |
Tensile and Hardness Requirements
| Tensile Strength MIN | Yield Strength (0.2%Offset) MIN | Elongation MIN |
| Ksi – 71, MPa – 490 | Ksi – 31 , MPa – 215 | 35 % |
Heat Treating Requirements
| Grade | Heat Treat Type | Temperature min | Cooling Media | Quenching Cool Below |
| F904L | Solution Treat and Quench | 1050-1150℃ | Liquid | 260℃ |
Applications
Fabrication Industry
Pollution-Control Equipment
Natural Gas Industry
Pharmaceutical Industry
Pulp and Paper Industry
Chemical Industry
Oil and Gas Well Piping
Nuclear Fuel Reprocessing
Water Pipeline Industry
Condenser, Heat Exchangers and Piping Systems
