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ASTM A182 / ASME SA182 F904L (UNS N08904) Raised Face Slip On (SORF) Stainless Steel Flanges
Stainless Steel 904L Flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.
Stainless Steel 904L Flange is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel is also resistant to stress corrosion cracking and crevice corrosion. Grade 904L is non-magnetic, and offers excellent formability, toughness and weldability.
Stainless Steel 904L Flange contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex stainless steel 2205.
Stainless Steel Flange ASME SA182 F904L Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | EN | AFNOR | JIS | BS | KS |
| SS 904L | 1.4539 | N08904 | X1NiCrMoCu25-20-5 | Z2 NCDU 25-20 | SUS 904L | 904S13 | STS 317J5L |
Chemical Composition of Grade 904L Stainless Steel Flanges
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
Mechanical Properties of ASTM A182 / SA 182 SS 904L Pipe Flanges
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
ASTM A182 F904L Stainless Steel Flanges
| Specifications | ASTM A182, ASME SA182 |
|---|---|
| ASME B16.5 904L SS Flange size range | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| ASTM A182 Stainless Steel 904L Flanges Standards | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges, ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Main Types | Forged / Threaded / Screwed / Plate |
| Types of Stainless Steel 904L Flanges |
|
| 904L Stainless Steel Flange Pressure Ratings | DIN:PN6 PN10 PN16 PN25 PN40; ANSI: class: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-PN6, PN10, PN16, PN25, PN40, PN64 etc. JIS: 5K, 10 K, 16 K 20 K,30 K,40 K, 63 K; |
| Production technique |
|
| Connect Type/ Flange Face Type | Ring Type Joint (RTJ), Flat Face (FF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove |
| Special design | As per your drawing AS, ANSI, BS, JIS and DIN 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations SS 904L Slip-On Flange, Threaded Flange, Weld Neck Flange, Blind Flange, Socketweld Flange |
| Test | Hydrostatic testing machine, Direct-reading Spectrograph, Magnetic particle detector, X-ray detector,UI trasonic flaw detector,Magnetic particle detector |
| Equipment | Pushing Machine,Bending machine, Press machine ,electric bevelling machine, Sand-blasting machine etc |
| Standard | ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. ANSI Flange, ASME Flange,BS Flange, EN Flange, API 6A Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/KS Flange, BS4504 Flange, GB Flange, GOST Flange, PSI Flange,AWWA C207 Flange
|
| AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) |
|
| Key markets and industries for ASTM A182 F904L Flanges |
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| Straight Piping Connection Application |
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| 904L Stainless Steel Pipe Flanges Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Applications
1. Oil and Gas Industry
2. Chemical Industry
3. Petrochemical Industry
4. Power Plant Industry
5. Refinery Industry
6. Food Processing Industry
7. Energy Industry
8. Aerospace Industry
9. Pulp & Paper Industry
