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Jai Hind Metal is a reliable manufacturer and supplier of SMO 254 Pipe Fittings, providing high-performance super austenitic stainless steel fittings for industrial piping systems exposed to corrosive media and demanding service conditions. SMO 254, also known as UNS S31254, is valued for its high resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making it suitable for applications where conventional stainless steel may not provide sufficient corrosion protection. We understand that each project has its own technical requirements, including fitting dimensions, wall thickness, schedules, connection types, surface finishes, tolerances, and applicable material specifications. Our SMO 254 Pipe Fittings can be supplied in different configurations and sizes according to customer drawings and project needs, with careful attention to dimensional accuracy, material identification, surface quality, and workmanship. Before dispatch, fittings are subject to appropriate quality checks, such as dimensional verification and visual inspection, to confirm conformity with the agreed order requirements. Additional inspection, third-party testing, and relevant material documentation can be arranged upon request. Through organized stock management and proper material handling, Jai Hind Metal aims to provide dependable supply support for standard requirements as well as customized industrial projects.
Precisely manufactured metal products meeting demanding industrial standards.
Consistent quality, reliable performance, and strict inspection at every stage.
Available in customized sizes, grades, thicknesses, and specifications.
Efficient processing, secure packaging, and dependable delivery worldwide.
SMO 254 Pipe Fittings are manufactured from a high-alloy austenitic stainless steel containing chromium, nickel, molybdenum, and nitrogen, with copper also present to enhance corrosion resistance in suitable environments. This carefully balanced composition provides excellent resistance to pitting and crevice corrosion, particularly in chloride-containing conditions, while helping the material withstand many aggressive industrial process environments. SMO 254 is also known for its good mechanical strength and resistance to chloride-induced stress corrosion cracking, making it a valuable choice for demanding piping applications. These fittings are available in various configurations, including elbows, tees, reducers, and other specialized designs, with dimensions, wall thicknesses, and connection types selected according to project requirements and applicable specifications. Their combination of high corrosion resistance, good mechanical strength, and dependable performance in chloride-rich environments makes SMO 254 Pipe Fittings suitable for chemical processing plants, desalination facilities, marine installations, offshore systems, pulp and paper mills, and other industrial applications where resistance to aggressive media is essential.
In the solution-annealed condition, SMO 254 Pipe Fittings provide a useful combination of mechanical strength, toughness, and outstanding resistance to localized corrosion, making them suitable for challenging industrial environments. Their high-alloy composition, featuring chromium, nickel, molybdenum, and nitrogen, helps the material resist pitting and crevice corrosion, particularly in chloride-rich conditions. These fittings are commonly used in piping systems serving chemical processing plants, desalination facilities, marine and offshore installations, pulp and paper mills, seawater handling systems, and other industries where corrosive fluids can affect equipment reliability. Components such as elbows, tees, reducers, and customized fittings can be selected to meet specific piping layouts, connection requirements, and operating conditions. SMO 254 is especially valued in applications where chloride exposure, corrosion resistance, and long-term service reliability are key concerns. With its combination of excellent resistance to pitting and crevice corrosion, good mechanical strength, and resistance to chloride-induced stress corrosion cracking, SMO 254 Pipe Fittings can provide dependable service when the material grade, fabrication practices, and operating environment are carefully evaluated.
In the solution-annealed condition, SMO 254 Pipe Fittings deliver a reliable balance of mechanical strength, toughness, and resistance to aggressive corrosive environments, making them suitable for demanding industrial applications. Their high-alloy composition, including chromium, nickel, molybdenum, and nitrogen, helps provide strong resistance to pitting and crevice corrosion, especially in chloride-rich conditions. These fittings are commonly used in piping systems for chemical processing plants, seawater handling facilities, desalination units, marine and offshore installations, pulp and paper mills, and other industries where corrosion control is essential. Available components, including elbows, tees, reducers, and custom-designed fittings, can be selected to match specific system layouts, connection requirements, dimensions, and operating conditions. SMO 254 is particularly useful in applications where exposure to chlorides and corrosive fluids can affect equipment service life. With its combination of excellent localized corrosion resistance, good mechanical strength, and resistance to chloride-induced stress corrosion cracking, SMO 254 Pipe Fittings can support dependable industrial performance when material selection, fabrication, and service conditions are properly assessed.
Specification | SMO 254 Pipe Fittings |
|---|---|
Type | Butt Weld (BW), Seamless (SMLS), Welded |
Thickness | Sch 5S, 10S, 20S, 40S, 80S, STD, XS, 160, XXS |
Dimension Standard | ASME B16.9, ASME B16.28, MSS SP-43 |
Fittings Standard | ASTM A403 / ASME SA403, where applicable; other standards as specified |
Fitting Types | Elbow, Tee, Reducer, Cap, Stub End, Return Bend |
Connection Type | Butt Weld, Socket Weld, Threaded, Flanged |
Pressure-Temperature Rating | Based on applicable standards, wall thickness, temperature, and design conditions |
Size | Commonly NPS ½ to NPS 48, depending on fitting type and availability |
Material Grade | SMO 254, UNS S31254, EN 1.4547 |
Key Properties | Excellent resistance to pitting, crevice corrosion, and chloride-containing environments |
Applications | Marine, Chemical Processing, Desalination, Seawater Piping, and Pulp and Paper Industries |
Available Materials | SMO 254, Stainless Steel, Duplex Steel, Carbon Steel, Alloy Steel, Nickel Alloys, Titanium, and Cupro-Nickel |
DN (mm) | Schedule 10S: 90° Elbow (kg) | Schedule 10S: 45° Elbow (kg) | Schedule 10S: Equal Tee (kg) | Schedule 40S: 90° Elbow (kg) | Schedule 40S: 45° Elbow (kg) | Schedule 40S: Equal Tee (kg) | Schedule 80S: 90° Elbow (kg) | Schedule 80S: 45° Elbow (kg) | Schedule 80S: Equal Tee (kg) |
|---|---|---|---|---|---|---|---|---|---|
8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.40 | 1.28 | 0.91 | 0.59 | 1.59 |
65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
Element of SMO 254 Pipe Fittings | Content (%) |
|---|---|
Chromium (Cr) | 19.50–20.50 |
Nickel (Ni) | 17.50–18.50 |
Molybdenum (Mo) | 6.00–6.50 |
Copper (Cu) | 0.50–1.00 |
Nitrogen (N) | 0.18–0.22 |
Carbon (C) | ≤ 0.020 |
Manganese (Mn) | ≤ 1.00 |
Silicon (Si) | ≤ 0.80 |
Phosphorus (P) | ≤ 0.030 |
Sulfur (S) | ≤ 0.010 |
Iron (Fe) | Balance |
O.D. or I.D. Diameter (Inch) | Equivalent Decimal (Inch) | Nominal Pipe Size (NPS) | Typical Threads per Inch (TPI) |
|---|---|---|---|
5/16 | 0.313 | 1/16 | 27 |
13/32 | 0.405 | 1/8 | 27 |
35/64 | 0.540 | 1/4 | 18 |
43/64 | 0.675 | 3/8 | 18 |
27/32 | 0.840 | 1/2 | 14 |
1-3/64 | 1.050 | 3/4 | 14 |
1-5/16 | 1.315 | 1 | 11-1/2 |
1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
2-3/8 | 2.375 | 2 | 11-1/2 |
2-7/8 | 2.875 | 2-1/2 | 8 |
3-1/2 | 3.500 | 3 | 8 |
4 | 4.000 | 3-1/2 | 8 |
4-1/2 | 4.500 | 4 | 8 |
Nominal Pipe Size (NPS) | Nominal Diameter (DN) | Gasket Type | Gasket Size Specification |
|---|---|---|---|
1/2″ | DN 15 | Spiral Wound / Ring Gasket | As per flange standard |
3/4″ | DN 20 | Spiral Wound / Ring Gasket | As per flange standard |
1″ | DN 25 | Spiral Wound / Ring Gasket | As per flange standard |
1-1/2″ | DN 40 | Spiral Wound / Ring Gasket | As per flange standard |
2″ | DN 50 | Spiral Wound / Ring Gasket | As per flange standard |
3″ | DN 80 | Spiral Wound / Ring Gasket | As per flange standard |
4″ | DN 100 | Spiral Wound / Ring Gasket | As per flange standard |
6″ | DN 150 | Spiral Wound / Ring Gasket | As per flange standard |
8″ | DN 200 | Spiral Wound / Ring Gasket | As per flange standard |
10″ | DN 250 | Spiral Wound / Ring Gasket | As per flange standard |
12″ | DN 300 | Spiral Wound / Ring Gasket | As per flange standard |
Element | Tensile Strength | Yield Strength (0.2% Offset) | Elongation | Density | Melting Point |
|---|---|---|---|---|---|
Cast SMO 254 Pipe Fittings | Psi – 94,000, MPa – 650 | Psi – 43,500, MPa – 300 | ≥ 35% | 8.0 g/cm³ | 1320–1390 °C (2408–2534 °F) |
Physical Property | Annealed Material | Aged and Annealed Material |
|---|---|---|
Density (lb/in³) | 0.296 | 0.297 |
Melting Range (°F) | 2300–2437 | 2300–2437 |
Melting Range (°C) | 1260–1336 | 1260–1336 |
Specific Heat at 70°F (Btu/lb·°F) | 0.104 | 0.104 |
Specific Heat at 21°C (J/kg·°C) | 435 | 435 |
Curie Temperature (°F) | Below −320 | −170 |
Curie Temperature (°C) | Below −196 | −112 |
Relative Magnetic Permeability at 200 Oersted and 70°F | 1.0013 | 1.0011 |
SMO 254 Pipe Fittings are available in various configurations, including elbows, tees, reducers, caps, and customized fittings, with a range of dimensions, wall thicknesses, schedules, and connection ends to suit different industrial piping and engineering applications. These fittings are supplied according to applicable material and dimensional specifications, with a focus on dimensional precision, surface quality, mechanical properties, and consistent manufacturing standards. Depending on the fitting type, manufacturing method, and product form, SMO 254 fittings can be supplied in accordance with relevant ASTM or ASME specifications, along with other recognized international standards where applicable and agreed upon. As SMO 254 is a high-alloy austenitic stainless steel known for its resistance to pitting and crevice corrosion, particularly in chloride-rich environments, selecting the correct material grade and verifying its suitability for the intended service conditions are essential. Material test certificates, heat-number identification, dimensional inspections, and material verification can help maintain product traceability and support compliance with project requirements. These fittings are commonly used in chemical processing plants, seawater handling systems, desalination facilities, marine installations, and other demanding industrial environments where corrosion resistance, dependable mechanical performance, and long-term service reliability are important.






We supply SMO 254 Pipe Fittings according to applicable international standards and project specifications, including relevant ASTM, ASME, EN, DIN, and JIS requirements, subject to the fitting type, product form, and intended application. Our fittings are available in a range of configurations, dimensions, wall thicknesses, schedules, and connection styles to meet the needs of industrial piping systems, engineering projects, maintenance work, and specialized fabrication. At Jai Hind Metal, we focus on material traceability, dimensional precision, surface finish, and consistent workmanship to help ensure that supplied products comply with the agreed technical requirements. Customized dimensions, specified tolerances, inspection and testing arrangements, material test certificates, heat-number identification, product marking, and project-specific documentation can also be coordinated when required. As SMO 254 is a high-alloy stainless steel designed for demanding corrosive environments, the appropriate material grade and applicable product specification should be verified for the intended service conditions. For product information, technical specifications, or customized requirements, email us at info@jaihindmetal.com.
SMO 254 Pipe Fittings are widely used in industrial piping systems that require excellent corrosion resistance, reliable mechanical strength, and consistent performance in aggressive service environments. Their high-alloy austenitic stainless steel composition helps resist pitting and crevice corrosion, particularly in chloride-rich conditions, making them suitable for applications involving seawater and other corrosive process media. These fittings are commonly used in chemical processing plants, desalination facilities, marine and offshore systems, seawater handling equipment, pulp and paper mills, and specialized industrial installations. Available configurations, including elbows, tees, reducers, and custom-designed fittings, accommodate different piping layouts, dimensions, and connection requirements. SMO 254 is especially valued where resistance to localized corrosion and long-term service reliability are important considerations. With its combination of strong pitting and crevice corrosion resistance, good mechanical properties, and resistance to chloride-induced stress corrosion cracking, SMO 254 Pipe Fittings are a dependable choice for demanding applications when the material grade is matched to the operating environment.
Looking for high-quality industrial products manufactured to your specific requirements? Contact our team for product details, customized solutions, pricing, and timely delivery.
Email: info@jaihindmetal.com
Our high-performance metal products are engineered to meet the demanding requirements of industries operating in challenging environments, including extreme temperatures, pressure and corrosive conditions.
Our corrosion-resistant metal products are widely used in marine environments where exposure to seawater, salt spray and harsh atmospheric conditions demands exceptional durability and reliability.
Our nickel alloys and high-performance metal products are used throughout the oil and gas industry for demanding applications involving high pressure, corrosive fluids, sour gas and extreme operating conditions.
Our corrosion-resistant alloys provide dependable performance in chemical processing equipment exposed to aggressive chemicals, high temperatures and challenging process conditions.
High-strength nickel alloys and specialty metals are selected for aerospace applications where lightweight performance, strength and resistance to extreme temperatures are essential.
Our specialty metal products support power generation equipment operating under high temperatures, pressure and corrosive conditions, delivering reliable long-term performance.
Corrosion-resistant metals are ideal for salt production environments where continuous exposure to concentrated salt and moisture can severely affect conventional materials.
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