Khaled Stainless, located in Cairo, Egypt, has earned a reputation as a reliable supplier of high-performance SMO 254 stainless steel nuts, specifically designed to withstand extreme corrosion and heavy loads. These super austenitic fasteners are crafted with meticulous attention to dimensional and metallurgical standards, ensuring they meet international requirements for critical industrial applications. Khaled Stainless provides SMO 254 nuts complete with verified test certifications, precise threading, and consistent mechanical performance. They are commonly utilized in offshore, marine, chemical, and desalination projects, offering long-lasting reliability where standard stainless grades might fall short. With quick availability, dependable stock, and expert technical support, Khaled Stainless is your go-to partner for demanding fastening solutions.
SMO 254 (UNS S31254) is a super austenitic stainless steel that boasts around 19.5–20.5% chromium, 17.5–18.5% nickel, 6–6.5% molybdenum, and 0.18–0.22% nitrogen. This impressive alloy composition grants it remarkable resistance to pitting and crevice corrosion (PREN > 42). Typical mechanical properties include a tensile strength ranging from 650–850 MPa, yield strength of about 300–400 MPa, and an elongation of roughly 35–40%. Additionally, this alloy exhibits excellent toughness and outstanding resistance to stress corrosion cracking, especially in high-chloride environments.
| Range | : | M10 TO M100 |
| Standards | : | ASTM / ASME SB 479 |
| Length | : | UPTO 5 METERS |
| Grade | : | UNS No. S31254 |
| Specification | : | IS, BS, ASTM |
| Type | : | Hot Forged and Cold Forged |
| SMO 254 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 17.5 – 18.5 | 0.02 max | 6 – 6.5 | 1 max | 0.8 max | – | 0.5 – 1 | 0.01 max | 0.03 max | 19.5 – 20.5 |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
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Corrosion-resistant product designed for extreme environments. SMO 254 Nuts are available in sizes from M6 to M36, ideal for marine, chemical processing, and offshore applications requiring superior resistance to pitting and crevice corrosion.
SMO 254 Coupling Nuts are engineered for joining threaded rods in harsh conditions. Available in sizes from M6 to M36, they provide strong connections for marine and chemical processing systems, ensuring durability and resistance to severe environments.
Featuring a nylon insert for secure fastening, SMO 254 Nylon Insert Nuts come in sizes from M6 to M24. They are perfect for applications in corrosive environments where vibration resistance and a stable connection are essential.
SMO 254 Flange Hex Nuts offer enhanced load distribution with integrated flanges. Available in sizes from M6 to M24, they are suitable for heavy-duty applications in marine and chemical industries, providing robust support and corrosion resistance.
Engineered for high-stress applications, SMO 254 Heavy Hex Nuts are available in sizes from M6 to M36. They are ideal for use in demanding environments like offshore rigs and chemical processing facilities, offering exceptional strength and corrosion resistance.
SMO 254 Square Nuts feature a large surface area for effective torque application. Available in sizes from M6 to M24, they are ideal for secure fastening in tight spaces, particularly in marine and industrial settings where superior corrosion resistance is required.
We ensure that all the products are of high quality, including SMO 254 Nuts, with consistent performance verified through an extensive range of tests such as hardness testing, spectro analysis, PMI, and flaring tests. We also perform micro and macro tests, pitting resistance tests, and IGC tests to ensure superior quality in every material we deliver. We have beyond our strict testing procedure adequate documentation such as commercial invoices, packaging list with net and gross weight, box numbers and labels. In addition, the legalized or attested Certificate of Origin and Third-Party Inspection Certificates establish our firm’s decision to present quality products for customers with absolute satisfaction.
SMO 254 nuts are essential in fastening systems that face highly aggressive chemical and marine conditions. You’ll find them in various applications, such as offshore oil and gas platforms, seawater piping systems, desalination plants, chemical processing equipment, heat exchangers, and flue gas scrubbers. These nuts excel in chloride-rich, acidic, and high-temperature environments where 316 or duplex fasteners often fail prematurely. Their impressive mechanical strength and exceptional corrosion resistance guarantee long-lasting joint integrity with minimal maintenance. SMO 254 nuts are widely recognized for their reliability in challenging conditions.
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