254 SMO Flanges
| Specification | Details |
|---|---|
| Product Name | 254 SMO Flanges |
| Material Grade | 254 SMO / UNS S31254 |
| Werkstoff Number | W.Nr. 1.4547 |
| Material Type | Super Austenitic Stainless Steel |
| Chemical Composition | Chromium, Nickel, Molybdenum and Nitrogen alloyed stainless steel with controlled Carbon, Silicon, Manganese, Phosphorus and Sulfur |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASTM A182 / ASME SA182, as applicable |
| Dimensional Standard | ASME B16.5 / ASME B16.47, as applicable |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / As per Applicable Material Specification |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Tensile Strength | As per Applicable 254 SMO Material Specification and Condition |
| Yield Strength | As per Applicable 254 SMO Material Specification and Condition |
| Elongation | As per Applicable Material Standard |
| Density | Approximately 8.0 g/cm³ |
| Melting Range | Approximately 1320–1400°C |
| Corrosion Resistance | Excellent resistance to general corrosion in aggressive environments |
| Pitting Resistance | Excellent resistance to pitting due to high molybdenum and nitrogen content |
| Crevice Corrosion Resistance | Excellent resistance to crevice corrosion in chloride-containing environments |
| Chloride Resistance | Excellent resistance to chloride-containing and seawater environments |
| Stress-Corrosion Resistance | Excellent resistance to chloride-induced stress-corrosion cracking |
| Acid Resistance | Excellent resistance to sulfuric, phosphoric and selected organic acids |
| Intergranular Corrosion Resistance | Good resistance under suitable service conditions |
| Oxidation Resistance | Good resistance to oxidation under suitable operating conditions |
| High-Temperature Performance | Suitable for selected elevated-temperature applications within recommended service limits |
| Welding | Good weldability using appropriate stainless-steel welding procedures |
| Fabrication | Suitable for machining, forming and specialized fabrication using appropriate procedures |
| Dimensional Accuracy | Precision dimensions according to applicable ASME standards |
| Available Forms | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide 254 SMO Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Marine, Seawater Handling, Chemical Processing, Desalination, Pulp & Paper, Pollution Control, Pharmaceutical, Petrochemical and Corrosive Process Piping |
1. Most Common Types of 254 SMO Flanges
| Type | Details |
|---|---|
| 254 SMO Weld Neck Flanges | Designed for strong welded connections and commonly selected for high-pressure, corrosive and chloride-rich piping systems. |
| 254 SMO Slip-On Flanges | Fits over the pipe and is welded in position for suitable industrial and process piping applications. |
| 254 SMO Blind Flanges | Used to close pipe ends, equipment nozzles, vessels and other openings in process systems. |
| 254 SMO Socket Weld Flanges | Suitable for smaller-bore piping systems requiring a compact socket-weld connection. |
| 254 SMO Threaded Flanges | Provides a threaded connection where welding is not preferred and the piping arrangement permits threaded installation. |
| 254 SMO Lap Joint Flanges | Used with a compatible stub end where frequent dismantling or alignment flexibility is required. |
| 254 SMO Orifice Flanges | Used in flow measurement systems requiring an orifice plate arrangement. |
| 254 SMO Ring Type Joint Flanges | Features an RTJ facing for applications requiring a suitable high-integrity gasketed connection. |
| 254 SMO Raised Face Flanges | Provides a raised sealing surface for suitable gasketed piping and equipment connections. |
| 254 SMO Flat Face Flanges | Features a flat sealing surface for applications requiring this particular facing configuration. |
| Customized 254 SMO Flanges | Manufactured according to customer drawings, dimensions, pressure class, facing, bore, testing and documentation requirements. |
2. 254 SMO Flanges – Technical Specifications
| Specification | Details |
|---|---|
| Product Name | 254 SMO Flanges |
| Material Grade | 254 SMO / UNS S31254 |
| Werkstoff Number | W.Nr. 1.4547 |
| Material Type | Super Austenitic Stainless Steel |
| Chemical Composition | Chromium, Nickel, Molybdenum and Nitrogen alloyed stainless steel with controlled Carbon, Silicon, Manganese, Phosphorus and Sulfur |
| Flange Type | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Manufacturing Type | Forged / Hot Forged / Precision Machined |
| Flange Standard | ASTM A182 / ASME SA182, as applicable |
| Dimensional Standard | ASME B16.5 / ASME B16.47, as applicable |
| Size | 1/2″ to 24″ or As per Customer Requirement |
| Pressure Class | Class 150 / 300 / 600 / 900 / 1500 / 2500, as applicable |
| Connection Type | Flanged Connection |
| Facing Type | Raised Face / Flat Face / Ring Type Joint, as applicable |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / As per Applicable Material Specification |
| Dimensions | As per ASME B16.5 / ASME B16.47 and Customer Requirements |
| MTC | EN 10204 3.1 / 3.2 |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required |
| Tensile Strength | As per Applicable 254 SMO Material Specification and Condition |
| Yield Strength | As per Applicable 254 SMO Material Specification and Condition |
| Elongation | As per Applicable Material Standard |
| Density | Approximately 8.0 g/cm³ |
| Melting Range | Approximately 1320–1400°C |
| Corrosion Resistance | Excellent resistance to general corrosion in aggressive environments |
| Pitting Resistance | Excellent resistance to pitting and localized corrosion |
| Crevice Corrosion Resistance | Excellent resistance to crevice corrosion in chloride-containing environments |
| Chloride Resistance | Excellent resistance to chloride-containing and seawater environments |
| Stress-Corrosion Resistance | Excellent resistance to chloride-induced stress-corrosion cracking |
| Acid Resistance | Excellent resistance to sulfuric, phosphoric and selected organic acids under suitable conditions |
| Intergranular Corrosion Resistance | Good resistance under suitable service conditions |
| Oxidation Resistance | Good resistance to oxidation under suitable service conditions |
| High-Temperature Performance | Suitable for selected elevated-temperature applications within recommended service limits |
| Welding | Good weldability using appropriate stainless-steel welding procedures |
| Fabrication | Suitable for machining, forming and specialized fabrication using appropriate procedures |
| Dimensional Accuracy | Precision dimensions according to applicable ASME standards |
| Available Forms | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable |
| Origin | European / American / Japanese / Korean and Other Approved Origins |
| Export Supply | Worldwide 254 SMO Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
| Applications | Marine, Seawater Handling, Chemical Processing, Desalination, Pulp & Paper, Pollution Control, Pharmaceutical, Petrochemical and Corrosive Process Piping |
3. 254 SMO Flanges – Supply & Quality Details
| Parameter | Details |
|---|---|
| Material Identification | 254 SMO / UNS S31254 / W.Nr. 1.4547 |
| Flange Configurations | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice |
| Size Range | 1/2″ to 24″ or As per Requirement |
| Pressure Classes | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Manufacturing | Forged / Hot Forged / Precision Machined |
| Applicable Standards | ASTM A182 / ASME SA182 and ASME B16.5 / B16.47, as applicable |
| Facing Options | Raised Face / Flat Face / Ring Type Joint |
| Bore Options | Standard Bore / Heavy Bore / Customized Bore |
| Surface Finish | Machined / Polished / As Specified |
| Heat Treatment | Solution Annealed / As Required |
| Testing | Chemical / Mechanical / Dimensional / Hardness / Visual / PMI / Other Tests |
| Inspection | Dimensional, Visual and Material Inspection |
| Certification | EN 10204 3.1 / 3.2 |
| Marking | Size, Grade, Standard, Class, Facing and Heat/Batch Identification |
| Material Traceability | Heat Number and Batch Identification as Applicable |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Packaging | Export-Worthy Wooden Cases, Boxes, Pallets or Customized Packaging |
| Documentation | MTC, Inspection Reports, Test Certificates and Other Documents as Required |
| Export Supply | Worldwide 254 SMO Flanges Supply |
| Applications | Marine Engineering, Seawater Equipment, Desalination, Chemical Processing, Pollution Control, Pulp & Paper, Petrochemical and Corrosive Process Piping |
Most Common Types Of 254 SMO Flanges
| Type | Details |
|---|---|
| 254 SMO Weld Neck Flanges | Designed for strong welded connections and commonly used in high-pressure, chloride-rich and corrosive piping systems. |
| 254 SMO Slip-On Flanges | Fits over the pipe and is welded in position for practical installation in suitable industrial piping applications. |
| 254 SMO Blind Flanges | Used to close pipe ends, equipment nozzles, vessels and other openings in process systems. |
| 254 SMO Socket Weld Flanges | Suitable for smaller-bore piping systems requiring a compact socket-weld connection. |
| 254 SMO Threaded Flanges | Provides a threaded connection where welding is not preferred and the piping arrangement permits threaded installation. |
| 254 SMO Lap Joint Flanges | Used with a compatible stub end where frequent dismantling or alignment flexibility is required. |
| 254 SMO Orifice Flanges | Used in flow measurement systems requiring an orifice plate arrangement. |
| 254 SMO Ring Type Joint Flanges | Features an RTJ facing for applications requiring a suitable high-integrity gasketed connection. |
| 254 SMO Raised Face Flanges | Provides a raised sealing surface for suitable gasketed piping and equipment connections. |
| 254 SMO Flat Face Flanges | Features a flat sealing surface for applications requiring this particular flange-facing configuration. |
| Customized 254 SMO Flanges | Manufactured according to customer drawings, dimensions, pressure class, facing, bore, drilling pattern, testing and documentation requirements. |
Why Should You Buy 254 SMO Flanges from Metalx Nickel & Alloys?
- Experienced 254 SMO Flanges Supplier & Exporter serving international buyers, importers, distributors, EPC contractors, stockholders, traders and industrial end users.
- 20+ Years of Stainless Steel & Nickel Alloy Industry Experience in supplying and exporting corrosion-resistant, high-performance and specialty alloy products to customers across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, Europe, Asia and other global markets.
- Specialized 254 SMO Flanges Exporter offering 254 SMO / UNS S31254 / W.Nr. 1.4547 Flanges according to applicable international standards and customer requirements.
- Global 254 SMO Sourcing Network with access to reputed stainless steel mills, manufacturers, authorized suppliers and approved stockholders across the USA, Europe, Japan, South Korea and other major international supply markets.
- Reliable 254 SMO Flanges Supplier providing super austenitic stainless steel flanges for demanding applications requiring excellent pitting and crevice corrosion resistance, superior seawater and chloride resistance, strong resistance to chloride-induced stress-corrosion cracking and reliable performance in aggressive chemical environments.
| Key Feature | Details |
|---|---|
| Excellent Chloride Resistance | Provides excellent resistance to chloride-containing environments and is suitable for demanding marine and industrial applications. |
| Superior Pitting Resistance | High alloying content, particularly molybdenum and nitrogen, improves resistance to localized pitting corrosion. |
| Excellent Crevice Corrosion Resistance | Offers strong resistance to crevice corrosion under suitable chloride-rich service conditions. |
| Seawater Resistance | Particularly suitable for seawater handling systems, marine equipment and desalination applications. |
| Aggressive Chemical Resistance | Performs reliably in various aggressive chemical environments when correctly selected for the service conditions. |
| Stress-Corrosion Resistance | Provides strong resistance to chloride-induced stress-corrosion cracking compared with conventional stainless steel grades. |
| Good Toughness | The austenitic structure provides useful toughness for demanding industrial piping applications. |
| Good Fabrication Characteristics | Can be fabricated and machined using appropriate procedures for super austenitic stainless steel. |
| Multiple Flange Types | Available in Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint and Orifice configurations. |
| Multiple Pressure Classes | Available in Class 150, 300, 600, 900, 1500 and 2500, subject to size and applicable standards. |
| Multiple Facing Options | Raised Face, Flat Face, Ring Type Joint and other suitable facing configurations can be supplied. |
| Custom Manufacturing | Size, bore, drilling, pressure class, facing, dimensions and surface finish can be customized according to project requirements. |
| Precision Machining | Flange faces, bolt holes, bores and other critical dimensions can be machined according to applicable standards. |
| Inspection & Testing | Dimensional, visual, chemical, mechanical and other specified testing can be arranged as required. |
| Export Quality Supply | Material identification, inspection documentation, suitable export packing and shipment coordination can be provided for international projects. |
| Specification | Details |
|---|---|
| Product Name | 254 SMO Flanges |
| Material Grade | 254 SMO Stainless Steel |
| UNS Designation | UNS S31254 |
| EN Grade | 1.4547 |
| Material Type | Super Austenitic Stainless Steel |
| Flange Types | Weld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice |
| Standards | ASME / ANSI / DIN / EN / JIS / BS and Customer Specifications |
| Dimensional Standards | ASME B16.5 / ASME B16.47 / EN 1092-1 and Equivalent Standards |
| Pressure Classes | Class 150 / 300 / 600 / 900 / 1500 / 2500, subject to size and applicable standard |
| Facing Options | Raised Face / Flat Face / Ring Type Joint / Other Options |
| Size Range | As per Applicable Standard and Customer Requirement |
| Manufacturing | Forged and Machined |
| Connection Type | Flanged Connection |
| Surface Finish | As per Applicable Standard or Customer Specification |
| Bore Type | Standard Bore / Heavy Bore / Customized Bore |
| Heat Treatment | Solution Annealed / As per Applicable Material Specification |
| Testing | Dimensional / Visual / Chemical / Mechanical and Other Tests as Required |
| Inspection | Dimensional, Visual and Material Inspection as Required |
| Marking | Grade, Size, Pressure Class, Standard and Heat Number as Applicable |
| MTC | EN 10204 3.1 / 3.2 |
| Customization | Size, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation |
| Applications | Seawater Systems, Desalination Plants, Chemical Processing, Pulp & Paper, Heat Exchangers, Offshore Installations and Industrial Piping Systems |
| Export Supply | Worldwide 254 SMO Flanges Export Supply |
| Exporter Support | Technical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination |
1. What are 254 SMO Flanges?
254 SMO Flanges are made from super austenitic stainless steel and are used for connecting pipes, valves, pumps, vessels and other equipment where excellent resistance to chloride-containing environments and aggressive chemicals is required.
2. What is the UNS number of 254 SMO Flanges?
The UNS designation for 254 SMO is UNS S31254 , and its EN material grade is 1.4547 .
3. What types of 254 SMO Flanges are available?
Common types include Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint and Orifice Flanges . Customized configurations can also be supplied according to project requirements.
4. What pressure classes are available for 254 SMO Flanges?
254 SMO Flanges can be supplied in Class 150, 300, 600, 900, 1500 and 2500 , subject to the flange size and applicable dimensional standard.
5. What are the key advantages of 254 SMO Flanges?
They offer excellent chloride resistance, superior pitting and crevice corrosion resistance, strong seawater resistance and good resistance to chloride-induced stress-corrosion cracking , making them suitable for demanding environments.
6. Where are 254 SMO Flanges used?
254 SMO Flanges are commonly used in seawater handling systems, desalination plants, chemical processing, pulp and paper plants, heat exchangers, offshore installations, marine equipment and corrosive industrial piping systems .