Andre Stainless is a prime producer and supplier of high-quality stainless steel products, based in Pulau Ujong, Singapore. One of its high-end products is the Stainless Steel 904L Flange, which has very high corrosion resistance and mechanical strength. It is suitable to operate in highly aggressive and corrosive conditions and is available in different types like slip-on and blind. Made of non-stabilized austenitic stainless steel 904L with elevated nickel and chromium content, these flanges are developed to satisfy the requirements of demanding industries while offering superior durability, long life, and consistent performance across key industrial applications.
Stainless Steel 904L is a non-stabilized austenitic alloy with elevated nickel content (around 24%) and chromium content (around 19%), in addition to 4.5% molybdenum and trace elements such as copper. This alloy offers excellent resistance to sulfuric acid, chloride-induced corrosion, and oxidizing conditions. The tensile strength of the alloy is approximately 490 MPa, while its yield strength is 220 MPa. The alloy offers good ductility, weldability, and impact strength. All these mechanical properties are well maintained even under harsh temperatures and corrosive conditions, and the best use of 904L flanges is in long-term and maintenance-free applications in extremely stressful industrial requirements.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2 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 – |
| 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 % |
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SS 904L Slip On Flanges offer excellent corrosion resistance, high strength, and durability for industrial applications, ensuring reliable performance.
SS 904L long weld neck flanges are engineered for high-strength applications requiring extended weld connections. They offer exceptional corrosion resistance and structural integrity, making them suitable for demanding industrial environments.
SS 904L lap joint flanges are designed for flexibility and ease of assembly, featuring excellent corrosion resistance and strength. Their superior durability makes them ideal for applications in aggressive environments and high-pressure systems.
SS 904L Blind Flanges provide strong corrosion resistance, high durability, and are ideal for sealing pipe ends in demanding environments.
Each and every unit of Stainless Steel 904L Flange is well packed with high-grade substances to curb rust and damage in shipping. We hire an efficient means of transportation to ensure timely delivery to the customers since their satisfaction is top priority. Delivery happens to the clients with all necessary documentation such as certificates of compliance along with material specifications, to ensure transparency and trust.
904L Stainless Steel Flanges are widely applied in industries requiring high corrosion resistance and strength. Some of the industries that use them include chemical processing, petrochemical, and marine industries, where exposure to sulfuric acid, phosphoric acid, and chlorides is common. Their pitting, crevice corrosion, and high-temperature stress resistance make them suitable for heat exchangers, pipelines, reactors, and pressure vessels. In the petroleum and gas industry, these flanges provide safe operation in harsh pressure and temperature environments. They also have applications in aerospace systems and offshore platforms, providing consistent, long-term service in the most demanding operating environments, both in terms of safety and cost effectiveness.
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