SMO 254 is a high-alloy austenitic stainless steel known for its excellent corrosion resistance in a wide range of aggressive environments. This material is particularly suitable for use in harsh chemical processing industries, such as those involving sulfuric acid, phosphoric acid, and chloride-containing solutions. SMO 254 offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it an ideal choice for critical applications where corrosion resistance is paramount.
Flanges made from SMO 254 are crucial components in piping systems, providing a means to connect pipes, valves, and other equipment. These flanges play a vital role in ensuring the integrity and reliability of the overall system. SMO 254 Flanges are preferred in corrosive environments where standard stainless steel might fall short in terms of durability and resistance.
Table Of Content
Key features of SMO 254 flanges include:
Corrosion Resistance: The primary advantage of SMO 254 flanges is their exceptional corrosion resistance. They can withstand corrosive attacks from various chemicals, acids, and saltwater, making them suitable for offshore and marine applications.
High Strength: SMO 254 exhibits high tensile strength and excellent toughness, contributing to the overall robustness of the flanges. This property is crucial in applications where the flanges may experience mechanical stresses.
Temperature Resistance: SMO 254 flanges maintain their mechanical properties at elevated temperatures, allowing them to be used in applications where temperature fluctuations are significant.
Weldability: SMO 254 is readily weldable using conventional welding techniques, ensuring ease of fabrication and installation of flanges in complex piping systems.
Low Maintenance: Due to its corrosion resistance and durability, systems equipped with SMO 254 flanges generally require lower maintenance, reducing downtime and operational costs.
Versatility: SMO 254 flanges find applications in a variety of industries, including chemical processing, petrochemicals, oil and gas, and pulp and paper.
ASTM A182 / ASME SA182, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
1/2" (15 NB) to 48" (1200NB)
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Forged / Threaded / Screwed / Plate
Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange.
All Flanges are marked as follows: Grade, Standard, Thickness, Heat No. (Or according to the customer’s request.)
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | SIS | GOST |
| SMO 254 | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | – | 2378 | – |
| 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 |
| 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 35,000 , MPa – 240 | Psi – 80,000 , MPa – 550 | 40 % |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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