254 SMO Cap
| Parameter | 254 SMO Cap Details |
|---|---|
| Product Name | 254 SMO Cap |
| Material Grade | 254 SMO / 6Mo Stainless Steel |
| UNS Number | S31254 |
| Werkstoff Number | 1.4547 |
| Alloy Family | Super-Austenitic Stainless Steel |
| Product Standard | ASTM A403 / ASME SA403 |
| Dimensional Standard | ASME B16.9 |
| Cap Type | Butt-Weld End Cap / Dished Cap |
| Size Range | 1/2″ to 48″ |
| Wall Thickness | SCH 5S–SCH 160 / XXS / Custom |
| Manufacturing | Seamless / Welded / Fabricated |
| End Connection | Butt Weld |
| End Preparation | Beveled / Plain / Customized |
| Heat Treatment | Solution Annealed |
| Surface Finish | Mill / Pickled / Passivated / Polished |
| Chromium | Approx. 19.5–20.5% |
| Nickel | Approx. 17.5–18.5% |
| Molybdenum | Approx. 6.0–6.5% |
| Nitrogen | Approx. 0.18–0.22% |
| Copper | Approx. 0.5–1.0% |
| Carbon | 0.020% max |
| Tensile Strength | Approx. 650 MPa minimum |
| Yield Strength | Approx. 300 MPa minimum |
| Elongation | Approx. 35% minimum |
| Density | Approx. 8.0 g/cm³ |
| PREN | Typically >40 |
| Pitting Resistance | Excellent |
| Crevice Corrosion Resistance | Excellent |
| Chloride SCC Resistance | Excellent |
| Weldability | Good with controlled welding procedures |
| Inspection | PMI / Visual / Dimensional / Mechanical / NDT |
| Certification | EN 10204 3.1 / 3.2 |
| Traceability | Heat Number / Batch Identification |
| Customization | Diameter, thickness, height, profile and end preparation |
| Supply | Domestic & Worldwide Export |
| Applications | Desalination, Offshore, Marine, Chemical Processing, Pulp & Paper, Flue Gas Scrubbing and Process Piping |
254 SMO Cap – Standard Size & Diameter
| NPS | Outside Diameter (mm) | Outside Diameter (in.) | Typical Schedule |
|---|---|---|---|
| 1/2″ | 21.34 | 0.840 | SCH 5S–XXS |
| 3/4″ | 26.67 | 1.050 | SCH 5S–XXS |
| 1″ | 33.40 | 1.315 | SCH 5S–XXS |
| 1-1/4″ | 42.16 | 1.660 | SCH 5S–XXS |
| 1-1/2″ | 48.26 | 1.900 | SCH 5S–XXS |
| 2″ | 60.33 | 2.375 | SCH 5S–XXS |
| 2-1/2″ | 73.03 | 2.875 | SCH 5S–XXS |
| 3″ | 88.90 | 3.500 | SCH 5S–XXS |
| 4″ | 114.30 | 4.500 | SCH 5S–XXS |
| 5″ | 141.30 | 5.563 | SCH 5S–XXS |
| 6″ | 168.28 | 6.625 | SCH 5S–XXS |
| 8″ | 219.08 | 8.625 | SCH 5S–XXS |
| 10″ | 273.05 | 10.750 | SCH 5S–XXS |
| 12″ | 323.85 | 12.750 | SCH 5S–XXS |
| 14″ | 355.60 | 14.000 | SCH 5S–XXS |
| 16″ | 406.40 | 16.000 | SCH 5S–XXS |
| 18″ | 457.20 | 18.000 | SCH 5S–XXS |
| 20″ | 508.00 | 20.000 | SCH 5S–XXS |
| 24″ | 609.60 | 24.000 | SCH 5S–XXS |
| 30″ | 762.00 | 30.000 | As Required |
| 36″ | 914.40 | 36.000 | As Required |
| 42″ | 1066.80 | 42.000 | As Required |
| 48″ | 1219.20 | 48.000 | As Required |
254 SMO Cap – Dimensional Range
| NPS | Outside Diameter (mm) | Outside Diameter (in.) | Typical Schedule |
|---|---|---|---|
| 1/2″ | 21.34 | 0.840 | SCH 5S–XXS |
| 3/4″ | 26.67 | 1.050 | SCH 5S–XXS |
| 1″ | 33.40 | 1.315 | SCH 5S–XXS |
| 1-1/4″ | 42.16 | 1.660 | SCH 5S–XXS |
| 1-1/2″ | 48.26 | 1.900 | SCH 5S–XXS |
| 2″ | 60.33 | 2.375 | SCH 5S–XXS |
| 2-1/2″ | 73.03 | 2.875 | SCH 5S–XXS |
| 3″ | 88.90 | 3.500 | SCH 5S–XXS |
| 4″ | 114.30 | 4.500 | SCH 5S–XXS |
| 6″ | 168.28 | 6.625 | SCH 5S–XXS |
| 8″ | 219.08 | 8.625 | SCH 5S–XXS |
| 10″ | 273.05 | 10.750 | SCH 5S–XXS |
| 12″ | 323.85 | 12.750 | SCH 5S–XXS |
| 14″ | 355.60 | 14.000 | SCH 5S–XXS |
| 16″ | 406.40 | 16.000 | SCH 5S–XXS |
| 18″ | 457.20 | 18.000 | SCH 5S–XXS |
| 20″ | 508.00 | 20.000 | SCH 5S–XXS |
| 24″ | 609.60 | 24.000 | SCH 5S–XXS |
| 30″–48″ | 762–1219.20 | 30″–48″ | As Required |
254 SMO Cap – Manufacturing & Quality Options
| Feature | Available Options |
|---|---|
| Tee Type | Equal / Reducing |
| Production Method | Hot Formed / Cold Formed / Seamless / Welded |
| Size Range | 1/2″–48″ |
| Wall Thickness | Standard Schedule / Custom WT |
| Branch Diameter | Equal / Reduced / Custom |
| Connection | Butt Weld |
| End Preparation | Beveled / Plain / Special |
| Surface Finish | Mill / Pickled / Bright Annealed / Polished |
| Heat Treatment | Annealed / Customer Requirement |
| Dimensional Inspection | OD / Thickness / Branch Alignment / Squareness |
| NDT | UT / RT / PT as specified |
| Material Verification | PMI / Chemical Analysis |
| Documentation | MTC / EN 10204 3.1 / 3.2 |
| Traceability | Heat & Batch Identification |
| Packing | Export-Grade Wooden Cases / Bundles |
| Custom Manufacturing | Non-Standard Branch, Size, Thickness & Geometry |
Why Should You Buy 254 SMO Caps from Metalx Nickel & Alloys?
- Experienced 254 SMO Cap Supplier & Exporter serving international buyers, distributors, EPC contractors, stockholders and industrial end users.
- 20+ Years of Alloy Industry Experience in supplying corrosion-resistant and high-performance alloy products to customers across the UAE, Saudi Arabia, Africa and other global markets.
- Specialized 254 SMO Exporter offering 254 SMO / UNS S31254 / 1.4547 Caps for demanding corrosive environments.
- Super Austenitic Stainless Steel Expertise for applications requiring excellent resistance to pitting, crevice corrosion and chloride-related attack.
- Global Sourcing Network with access to reputed stainless-steel and specialty-alloy mills, manufacturers and approved stockholders across Europe, USA, Japan and other major supply markets.
- Wide Specialty Stainless Fittings Range including 254 SMO, Duplex 2205, Super Duplex 2507 and other high-performance alloys.
- Ready Stock Availability for selected 254 SMO Cap sizes, subject to current stock and availability.
- Custom 254 SMO Cap Supply according to customer drawings, size, schedule, wall thickness and project specifications.
- Multiple Size & Schedule Options for standard and specialized piping requirements.
- ASTM / ASME Specification Supply according to applicable requirements, including ASTM A403 / ASME SA403, where applicable.
- ASME B16.9 Dimensional Compliance can be supplied where applicable to the fitting configuration.
- MTC with Quotation – Material Test Certificates and relevant technical documentation can be provided with export quotations and orders.
- EN 10204 3.1 / 3.2 Certification available according to the purchase order, project specification and inspection requirements.
- PMI Testing Support for positive material identification where required.
- Third-Party Inspection Support can be coordinated through approved inspection agencies for international export orders.
- Chemical, Mechanical & Dimensional Testing can be arranged according to applicable standards and customer specifications.
- Visual & Hardness Testing Support can be arranged where required by the applicable specification or purchase order.
- NDT Support including applicable ultrasonic or radiographic examination where specified.
- Pickling & Passivation can be supplied according to project requirements.
- Custom Surface Finish can be arranged according to the applicable specification.
- Export-Ready Packing designed to protect 254 SMO Caps during handling, storage and international transportation.
- Worldwide 254 SMO Cap Exporter serving buyers across the Middle East, Africa, Asia, Europe and other international markets.
- Competitive Export Pricing for bulk quantities, project orders, distributors, importers, traders and international stockholders.
- 254 SMO Cap Export Support for EPC contractors, engineering companies, desalination plants, offshore projects, marine industries, chemical plants, pulp & paper facilities and specialized industrial buyers.
- Technical Support from Export Enquiry to Shipment covering grade, size, schedule, wall thickness, heat treatment, testing, certification and packing requirements.
- Material Traceability with appropriate identification, certification and quality documentation for export projects.
- Data Sheets & Technical Documentation can be supplied according to customer requirements and project specifications.
- Global Logistics Coordination for 254 SMO Cap shipments to the UAE, Saudi Arabia, Qatar, Oman, Africa, Singapore, Europe and other destinations.
Key Features of 254 SMO Cap
- Super Austenitic Stainless Steel Construction – Manufactured from 254 SMO for highly demanding corrosion-resistant applications.
- High Molybdenum Content – Provides excellent resistance to localized corrosion in chloride-rich environments.
- High Chromium Content – Contributes to strong general corrosion resistance.
- Nitrogen Alloying – Supports mechanical strength and resistance to localized corrosion.
- Excellent Pitting Resistance – Suitable for aggressive chloride-containing services.
- Excellent Crevice Corrosion Resistance – Particularly useful for marine and seawater applications.
- Strong Chloride Stress Corrosion Cracking Resistance – Provides useful performance in suitable chloride-service environments.
- High General Corrosion Resistance – Suitable for a broad range of aggressive chemical conditions.
- Secure Pipe-End Closure – Designed to close and terminate compatible piping sections.
- Butt-Weld Construction – Provides a permanent welded connection when properly fabricated.
- Wrought / Formed Design – Manufactured according to applicable fitting requirements.
- Seamless & Welded Options – Configuration can be supplied depending on size and specification.
- Wide Size Availability – Available in various nominal pipe sizes.
- Multiple Wall Thicknesses – Different schedules and customized thicknesses can be supplied.
- Solution-Annealed Condition – Heat treatment can be supplied according to applicable requirements.
- Good Weldability – Suitable for welding using appropriate super-austenitic stainless-steel procedures.
- Good Fabrication Characteristics – Suitable for controlled forming and fabrication.
- Marine Applications – Useful for selected seawater and marine-service equipment.
- Desalination Applications – Suitable for selected desalination and seawater-treatment systems.
- Chemical Processing Applications – Can be used in selected aggressive chemical process systems.
- Oil & Gas Applications – Suitable for selected upstream, downstream and offshore systems.
- Pulp & Paper Applications – Useful for selected corrosive process environments.
- Flue Gas Desulfurization Applications – Can be considered for selected pollution-control equipment.
- Water Treatment Applications – Suitable for selected chloride-rich water-treatment services.
- Heat Exchanger Applications – Useful for selected heat-transfer systems exposed to corrosive media.
- Industrial Process Piping – Suitable where exceptional localized corrosion resistance is required.
- Custom Dimensions – Size and wall thickness can be supplied according to project requirements.
- Multiple Surface Options – Mill finish, pickled, passivated or other specified finishes can be supplied.
- PMI Verification – Positive Material Identification can be arranged where required.
- Material Traceability – Material identification and relevant certification can be supplied.
- Quality Testing Available – Chemical, mechanical, dimensional, visual, PMI and other specified inspections can be arranged.
- Export-Ready Material – Caps can be suitably packed for handling, storage and international transportation.
- Global 254 SMO Cap Exporter – METALX NICKEL & ALLOYS supplies 254 SMO Caps to international buyers, distributors, traders, stockholders and industrial end users.
| Specification | 254 SMO Cap Details |
|---|---|
| Product Name | 254 SMO Cap |
| Material Grade | 254 SMO / 6Mo Stainless Steel |
| UNS Designation | S31254 |
| Werkstoff Number | 1.4547 |
| Material Type | Super Austenitic Stainless Steel |
| Material Standard | ASTM A403 / ASME SA403, where applicable |
| Dimensional Standard | ASME B16.9, where applicable |
| Cap Type | Butt Weld Pipe Cap / End Cap |
| Configuration | Seamless / Welded, depending on size and specification |
| Size | As per applicable standard or customer specification |
| Wall Thickness | Different schedules and customized thicknesses |
| End Connection | Butt Weld |
| Manufacturing | Wrought / Formed, as applicable |
| End Preparation | Bevelled Ends for Butt Welding |
| Heat Treatment | Solution Annealed as applicable |
| Surface Finish | Mill Finish, Pickled, Passivated or customer-specified finish |
| Testing | Chemical, mechanical, dimensional, visual, PMI and other specified inspections |
| Documentation | MTC, inspection reports and relevant quality documents as required |
| Customization | Size, thickness, schedule, finish, testing and documentation |
| Packing | Export-worthy packing suitable for safe international transportation |
| Applications | Desalination, Marine, Chemical Processing, Oil & Gas, Pulp & Paper, Water Treatment and Pollution Control |
What is the Werkstoff Number of 254 SMO?
The Werkstoff Number is 1.4547.
Why is 254 SMO used in seawater environments?
Its high alloy content provides excellent resistance to pitting and crevice corrosion in suitable chloride-containing and seawater services.
What material standard is commonly applicable to 254 SMO Caps?
ASTM A403 / ASME SA403 can be applicable to wrought austenitic stainless-steel fittings, subject to the exact product requirements.
What dimensional standard is used for 254 SMO Caps?
ASME B16.9 is commonly applicable for dimensions and tolerances of wrought butt-welding fittings
Can Material Test Certificates be provided?
Yes. Material Test Certificates, inspection reports and relevant quality documents can be supplied according to customer and project requirements.
What testing can be provided?
Testing can include chemical analysis, mechanical testing, dimensional inspection, visual inspection, hydrostatic testing and other specified tests.