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SMO 254 Bolts are top-notch fasteners crafted from a high-alloy austenitic stainless steel, specifically designed to withstand tough conditions filled with chlorides and acids. These bolts boast impressive strength, toughness, and resistance to pitting, crevice corrosion, and stress corrosion cracking, making them perfect for demanding industrial settings. SMO 254 (UNS S31254) bolts shine in environments like seawater, brine, and chemical processing, where standard stainless steels might not hold up. Their outstanding durability and performance guarantee a long lifespan with minimal upkeep, even in highly corrosive situations.
When it comes to their chemical makeup, SMO 254 features about 20% chromium, 18% nickel, 6.5% molybdenum, and a touch of nitrogen, all of which work together to boost its corrosion resistance and mechanical properties. These bolts typically deliver a tensile strength ranging from 650 to 885 MPa and a yield strength of around 300 to 450 MPa, along with remarkable ductility and impact toughness. With a high PREN (Pitting Resistance Equivalent Number) value exceeding 42, they excel in chloride-rich and oxidizing environments.
| 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 % |
| Specifications of 254 SMO Fasteners | ASTM A479 & ASME SA479 |
| Standard of 254 SMO Fasteners | DIN, ASTM, BS and all International Standards |
| Length of 254 SMO Fasteners | 3 mm to 200 mm |
| 254 SMO Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| 254 SMO Bolt / Screw Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| 254 SMO Machine Screws Size | M1.6 – M12 |
| 254 SMO Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Stainless Steel Grades | SMO 254 |
| 254 SMO Fasteners Type | Socket Screw, Hex Set Screw, Cap Screw, Machine Screw, Wing Screw, Spring Washers, Washers, Studs, Marine Anchors, Anchors, Hexagon Nut,U- Bolts, Anchor Bolt, Mushroom Head Square Neck Bolts, J Bolts,Eye Bolt,Structural Bolts, Bolts, Nuts, Sockets, Screws, Allen Cap screw, Nut, Hex Coupling Nut, Hex Nut, Square Nut, Hex Domed Cap Nuts, Hex Head Bolts, Stud Bolts, Socket Hexagon Head Screw, Pan Head Screw, Socket Head Cap Screw, Wing Screw, T-Head Bolts, Foundation Bolts,Screw, Studs |
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You’ll find SMO 254 Bolts commonly used in seawater handling systems, desalination plants, chemical tankers, pulp and paper mills, offshore platforms, and flanged piping systems that face harsh chemicals. They’re perfect for critical fastening tasks where both mechanical strength and corrosion resistance are crucial. In sectors like marine engineering, oil & gas, and chemical processing, SMO 254 bolts provide secure, dependable connections even under extreme environmental pressures, making them a go-to choice for lasting performance in tough applications.
Bilal Fasteners is a leading manufacturer and supplier of high-quality fasteners in Indonesia, Jakarta, with over 8 years of experience serving global industries.
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