Vinit Stainless, Chennai, India, is a prominent manufacturer and supplier of high-performance stainless steel flanges, including SMO 254 flanges. SMO 254 flanges are designed to work in the most severe chloride-rich and corrosive environments like seawater applications, offshore platforms, and chemical processing plants. Made to international standards such as ASTM A182, SMO 254 flanges present excellent resistance to crevice corrosion, pitting, and stress corrosion cracking. Vinit Stainless provides precise machining, excellent surface finish, and dimensional accuracy, and hence these flanges are perfect for high-temperature, high-pressure, and high-performance fluid handling systems in highly demanding industries.
SMO 254 flanges (UNS S31254) contain about 20% chromium, 18% nickel, 6% molybdenum, and 0.18–0.22% nitrogen. This high-alloy content offers a superior Pitting Resistance Equivalent Number (PREN > 42.5), which makes them perfect for highly corrosive environments. Mechanical properties are a tensile strength ≥650 MPa, yield strength ≥300 MPa, and elongation of 35%. SMO 254 flanges retain their mechanical properties even at higher temperatures and high-pressure systems, providing hardness and reliability in harsh marine, chemical, and industrial service conditions.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/2″ (15 NB) to 48″ (1200NB) |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc |
| Grade | C | Mn | Si | Cu | S | P | Mo | Ni | Cr |
| SMO 254 Flanges | 0.02 | 1 | 0.08 | 0.5-1.0 | 0.01 | 0.03 | 6.0-6.5 | 17.5-18.5 | 19.5-20 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8 g/cm3 | 1320-1390 ℃ | 650 | 300 | 35 |
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254 SMO blind flanges are designed for high-corrosion resistance and strength in harsh environments. They effectively seal the end of a pipe, providing a secure, leak-proof closure in demanding applications.
SMO UNS S31254 blind flanges offer exceptional resistance to corrosion and high temperatures. Ideal for sealing pipe ends in challenging environments, they ensure a durable, leak-proof closure for critical systems.
SMO UNS S31254 orifice flanges are engineered for high durability and resistance to extreme conditions. They facilitate accurate flow measurement and control in corrosive and high-temperature environments, ensuring reliable performance.
SMO 254 flanges have wide application in severely corrosive and chloride-bearing environments where general stainless steels do not work. Seawater handling systems, desalination plants, offshore oil and gas platforms, and chemical processing units are common applications. They have application in pulp and paper bleach plants, heat exchangers, and flue gas cleaning systems because they are highly resistant to pitting, crevice corrosion, and stress corrosion cracking. SMO 254 flanges are perfect for joining pipe, pumps, and valves in high pressure systems with leak-proof operation and prolonged lifespan in the most adverse industrial environments, particularly where seawater or aggressive chemicals are involved.
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