SMO 254 is a highly versatile nickel-iron-chromium alloy known for its exceptional resistance to corrosion, making it an ideal choice for manufacturing fittings, flanges, and fasteners. Its unique composition, which includes molybdenum, copper, and titanium, enhances its strength and durability in various corrosive environments, including acidic, oxidizing, and reducing conditions. Industries such as chemical processing, marine engineering, oil and gas, and power generation rely heavily on SMO 254 for critical applications requiring robust performance.

Fittings made from SMO 254 are available in numerous configurations, including elbows, tees, reducers, and couplings. These fittings are highly valued for their ability to withstand harsh chemicals such as sulfuric, phosphoric, and nitric acids. As a result, they are widely used in heat exchangers, pressure vessels, and piping systems in industrial plants.
For importers and stockists, SMO 254 fittings are a key product due to their high demand in international markets, especially in regions with extensive industrial operations.Flanges crafted from SMO 254 are another indispensable product, offering secure and leak-proof connections for piping systems.
These flanges, available in types such as slip-on, weld-neck, blind, and threaded, provide outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Suppliers and exporters of SMO 254 flanges ensure they meet stringent international standards such as ASTM and ASME to cater to global markets. Their reliable performance in offshore platforms, petrochemical plants, and nuclear reactors makes them a preferred choice among engineers and procurement professionals.
SMO 254 fittings, flanges, and fasteners represent the pinnacle of engineering excellence, combining durability and versatility. Importers, suppliers, stockists, and exporters play a crucial role in ensuring the availability of these products to industries worldwide, contributing to the growth and efficiency of critical infrastructure.
UNS No. | S31254 |
---|---|
Standards | SMO 254 Fittings, Flanges & Fastners |
Fitting Size | 1/2"NB to 36"NB |
Fitting Thickness | SCH55, SCH10S, SCH40S, SCH50S, SCH100S, SCH120S, SCH5, SCH10, SCH40, SCH80, SCH100, SCH120, SCH160, SCH140, SCH160, SCH XXS |
Type | Seamless/Welded/Fabricated |
Flange Size | 1/2"NB to 36"NB |
Flange Class | 150#, 300#, 900#, 600#, 1500# |
Flange Type | Weld neck, Slip on, Blind, Socket weld, (WNRF, BLRF, SORF, SOFF) |
Fasteners Size | M3 to M80, 1/8" to 70", Custom size |
Fasteners Length | 3mm to 300mm |
Bolt Type | Hex head bolts, Square Bolts, T Bolts, U8 Bolts, Dome Bolt, etc |
Screw Type | Hex head Screw, Socket head Screw, Socket set Screw, etc |
Studs Types | Double Ended Studs, Threaded Rod, Tie Bars, etc |
Washer Types | Plain Washers, Lock Washers, Star Washer, etc |
Nut Types | Hex Nut, Lock Nut, Dome Nut, Square Nut, Coupling Nut, etc |
GRADE | Werks Toff | UNS | Ni | Cr | Co | Mo | Fe | Cu | Nb | Al | Ti | C | S | Si | Mn | Others |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SMO 254 | 1.4547 | S31254 | 17.5 - 18.5 | 19.5 - 20.5 | - | 6.0 - 6.5 | - | 0.5 - 1.0 | - | - | - | 0.02 Max | 0.01 Max | 0.7 Max | 1.00 Max | P - 0.03 Max / N - 0.18 - 0.22 |
Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
---|---|---|---|---|---|
SMO 254 | 650 | 280 | 40 | 8 |