High-grade stainless steel 321 flanges from Vinit Stainless, a well-known manufacturer and supplier in Chennai, India, are made to perform exceptionally well in corrosive and hot conditions. Austenitic stainless steel stabilised with titanium, SS 321 is perfect for applications requiring frequent or continuous exposure to heat because it doesn’t corrode between granules. 321 flanges in a range of sizes, pressure ratings, and face types are available from Vinit Stainless. They are produced in accordance with international standards like ANSI, ASTM, and ASME. These flanges are widely used in power generation systems, chemical plants, and thermal processing equipment where weldability and durability are essential.
In order to improve resistance to carbide precipitation, stainless steel 321 flanges are stabilised with titanium (at least five times the carbon content) and contain 17–19% chromium and 9–12% nickel. Because of its composition, SS 321 has exceptional resistance to oxidation and creep, particularly at temperatures as high as 870°C. The material’s yield strength is approximately 205 MPa, and its tensile strength ranges from 515 to 750 MPa. At low temperatures, SS 321 also retains its good toughness. It is the perfect option for high-temperature, welded applications that demand structural integrity over time because of its mechanical and thermal characteristics.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 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) |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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SS 321 blind flanges are used to seal the end of a piping system. Crafted from stainless steel, they provide a robust, corrosion-resistant solution for maintaining system integrity and pressure.
SS 321 ring type joint flanges offer a secure, leak-proof seal in high-pressure environments. Made from stainless steel, they feature a ring groove design for reliable, corrosion-resistant performance in demanding applications.
SS 321 forged flanges are crafted from stainless steel for high strength and durability. They are ideal for demanding applications, offering excellent resistance to high temperatures, corrosion, and mechanical stress.
321 Stainless Steel In industries where corrosion resistance and high-temperature strength are essential, flanges are widely used. Exhaust systems, chemical processing machinery, furnace parts, heat exchangers, and thermal oxidisers are examples of common applications. Because the titanium stabilisation stops intergranular corrosion during welding, these flanges are particularly well-suited for welded systems that function at high temperatures. Because of their dependability and simplicity of fabrication, SS 321 flanges are also used in the food processing, aerospace, and petroleum refining industries. In settings subjected to aggressive media and thermal cycling, their resistance to oxidation and scaling guarantees a long service life.
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