Khaled Stainless, located in Cairo, Egypt, stands out as a trusted provider of high-performance SMO 254 stainless steel flanges, specifically crafted for piping systems that face extreme corrosion and pressure challenges. These super austenitic flanges are produced with meticulous attention to dimensional accuracy, metallurgical standards, and full traceability to meet international guidelines. Khaled Stainless caters to various industries, supplying SMO 254 flanges for chemical plants, offshore platforms, desalination units, and high-purity processes where standard stainless grades just won’t cut it. With certified raw materials, consistent machining quality, and quick regional availability, Khaled Stainless is the go-to partner for EPC contractors and industrial fabricators needing reliable flange solutions for tough environments.
SMO 254 (UNS S31254) is a super austenitic stainless steel that boasts about 19.5–20.5% chromium, 17.5–18.5% nickel, 6–6.5% molybdenum, and 0.18–0.22% nitrogen. This cutting-edge alloy offers an impressive pitting resistance equivalent number (PREN > 42). Its typical mechanical properties include a tensile strength ranging from 650–850 MPa, a yield strength of about 300–400 MPa, and an elongation of 35–40%. It excels in resisting pitting, crevice corrosion, and stress corrosion cracking, especially in environments rich in chlorides.
| 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.
We make sure the highest quality of our SMO 254 Flanges by conducting rigorous testing and inspections. Throughout the manufacturing process. These procedures guarantee the flanges durability and performance in challenging environments. Additionally we prioritize on time delivery to meet our customers deadlines. Ensuring seamless and reliable service for all orders.
SMO 254 flanges are essential in piping systems that encounter highly aggressive chemicals, chlorides, and elevated temperatures. You’ll find them in various applications, such as offshore oil and gas pipelines, desalination plants, seawater intake systems, chemical processing units, heat exchangers, pulp and paper bleaching facilities, and flue gas desulfurization systems. These flanges are the preferred choice where 316, 904L, and duplex flanges fall short due to rapid corrosion. Their high strength, excellent weldability, and outstanding corrosion resistance guarantee a long service life, minimal leakage risk, and dependable joint integrity, even in the most demanding industrial settings.
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