Stainless Steel 904L Flanges are crucial components in various industrial applications, known for their exceptional corrosion resistance and high strength. These flanges are made from a high alloy austenitic stainless steel grade, specifically designed to withstand aggressive environments, including corrosive acids and harsh chemicals.
The key feature of Stainless Steel 904L is its high nickel and chromium content, along with the addition of molybdenum and copper. This unique combination provides the alloy with superior resistance to corrosion, especially in reducing environments. As a result, Stainless Steel 904L flanges are widely used in industries such as chemical processing, pharmaceuticals, petrochemicals, and oil and gas.
One of the notable characteristics of 904L stainless steel is its ability to resist corrosion in a wide range of temperatures and concentrations of acids. This makes it suitable for applications where other conventional stainless steels might fail. The addition of copper further enhances its resistance to sulfuric acid and other reducing agents.
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Stainless Steel 904L Flanges come in various types, including slip-on, weld neck, blind, socket weld, and lap joint flanges, among others. These flanges are designed to facilitate easy installation and ensure a secure and leak-free connection in piping systems. The choice of flange type depends on the specific requirements of the application.
Due to its excellent mechanical properties, Stainless Steel 904L flanges offer high tensile and yield strength, making them suitable for applications where strength and reliability are crucial. These flanges are also known for their weldability, allowing for easy fabrication and assembly in various industrial processes.
In addition to their corrosion resistance and mechanical properties, Stainless Steel 904L flanges are often preferred for their longevity and low maintenance requirements. These qualities contribute to their cost-effectiveness over the long term, making them a preferred choice in critical and demanding applications.
ASTM A182 / ASME SA182, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
1/2" (15 NB) to 48" (1200NB)
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Forged / Threaded / Screwed / Plate
Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange.
All Flanges are marked as follows: Grade, Standard, Thickness, Heat No. (Or according to the customer’s request.)
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
| 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 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 904L | 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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