MetalX Nickel Alloys

254 SMO Cross

Parameter254 SMO Cross Details
Product Name254 SMO Cross
Material Grade254 SMO / 6Mo Stainless Steel
UNS NumberS31254
Werkstoff Number1.4547
Alloy FamilySuper-Austenitic Stainless Steel
Product StandardASTM A403 / ASME SA403
Dimensional StandardASME B16.9
Cross ConfigurationEqual Cross / Reducing Cross
Branch ArrangementFour-Way / Reduced Branch
Nominal Size1/2″ to 48″
ConstructionSeamless / Welded / Fabricated
Wall ThicknessSCH 5S–SCH 160 / XXS / Custom
End ConnectionButt Weld
End PreparationBeveled / Plain / Customized
Heat TreatmentSolution Annealed
Surface FinishMill / Pickled / Passivated / Polished
ChromiumApprox. 19.5–20.5%
NickelApprox. 17.5–18.5%
MolybdenumApprox. 6.0–6.5%
NitrogenApprox. 0.18–0.22%
CopperApprox. 0.5–1.0%
Carbon0.020% max
Tensile StrengthApprox. 650 MPa minimum
Yield StrengthApprox. 300 MPa minimum
ElongationApprox. 35% minimum
DensityApprox. 8.0 g/cm³
PRENTypically >40
Pitting ResistanceExcellent
Crevice Corrosion ResistanceExcellent
Chloride SCC ResistanceExcellent
WeldabilityGood with controlled welding procedures
InspectionPMI / Visual / Dimensional / Mechanical / NDT
CertificationEN 10204 3.1 / 3.2
TraceabilityHeat Number / Batch Identification
CustomizationBranch sizes, thickness, dimensions and special geometry
SupplyDomestic & Worldwide Export
ApplicationsDesalination, Offshore, Marine, Chemical Processing, Pulp & Paper, Flue Gas Scrubbing and Process Piping

 

254 SMO Cross – Equal & Reducing Sizes

Run SizeBranch SizeCross TypeRun ODBranch OD
1/2″1/2″Equal Cross21.34 mm21.34 mm
3/4″3/4″Equal Cross26.67 mm26.67 mm
1″1″Equal Cross33.40 mm33.40 mm
1-1/4″1-1/4″Equal Cross42.16 mm42.16 mm
1-1/2″1-1/2″Equal Cross48.26 mm48.26 mm
2″2″Equal Cross60.33 mm60.33 mm
2-1/2″2-1/2″Equal Cross73.03 mm73.03 mm
3″3″Equal Cross88.90 mm88.90 mm
4″4″Equal Cross114.30 mm114.30 mm
6″6″Equal Cross168.28 mm168.28 mm
8″8″Equal Cross219.08 mm219.08 mm
10″10″Equal Cross273.05 mm273.05 mm
12″12″Equal Cross323.85 mm323.85 mm
2″1″Reducing Cross60.33 mm33.40 mm
3″2″Reducing Cross88.90 mm60.33 mm
4″2″Reducing Cross114.30 mm60.33 mm
4″3″Reducing Cross114.30 mm88.90 mm
6″4″Reducing Cross168.28 mm114.30 mm
8″6″Reducing Cross219.08 mm168.28 mm
10″8″Reducing Cross273.05 mm219.08 mm
12″10″Reducing Cross323.85 mm273.05 mm

 

254 SMO Cross – Size & Schedule Range

NPSOutside DiameterTypical ScheduleAvailable Configuration
1/2″21.34 mmSCH 5S–XXSEqual / Reducing
3/4″26.67 mmSCH 5S–XXSEqual / Reducing
1″33.40 mmSCH 5S–XXSEqual / Reducing
1-1/4″42.16 mmSCH 5S–XXSEqual / Reducing
1-1/2″48.26 mmSCH 5S–XXSEqual / Reducing
2″60.33 mmSCH 5S–XXSEqual / Reducing
2-1/2″73.03 mmSCH 5S–XXSEqual / Reducing
3″88.90 mmSCH 5S–XXSEqual / Reducing
4″114.30 mmSCH 5S–XXSEqual / Reducing
6″168.28 mmSCH 5S–XXSEqual / Reducing
8″219.08 mmSCH 5S–XXSEqual / Reducing
10″273.05 mmSCH 5S–XXSEqual / Reducing
12″323.85 mmSCH 5S–XXSEqual / Reducing
14″355.60 mmSCH 5S–XXSEqual / Reducing
16″406.40 mmSCH 5S–XXSEqual / Reducing
18″457.20 mmSCH 5S–XXSEqual / Reducing
20″508.00 mmSCH 5S–XXSEqual / Reducing
24″609.60 mmSCH 5S–XXSEqual / Reducing
30″–48″762–1219.20 mmAs RequiredEqual / Reducing

254 SMO Cross – Manufacturing & Quality Details

FeatureAvailable Options / Details
Cross PatternEqual / Reducing
Production ProcessHot Formed / Cold Formed / Seamless / Welded
Size Range1/2″–48″
Branch SizeEqual / Reduced / Custom
Wall ThicknessStandard Schedule / Custom WT
ConnectionButt Weld
End PreparationBeveled / Plain / Special
Surface TreatmentMill / Pickled / Passivated / Polished
Heat TreatmentSolution Annealed
Material VerificationPMI / Chemical Analysis
Mechanical TestingTensile / Yield / Elongation
Dimensional InspectionOD / Thickness / Branch Alignment / Squareness
NDTUT / RT / PT as specified
Corrosion TestingPitting / Intergranular Testing as specified
DocumentationMTC / EN 10204 3.1 / 3.2
TraceabilityHeat Number / Batch Identification
Third-Party InspectionAvailable as required
PackingExport-Grade Wooden Cases / Bundles
Custom ManufacturingSpecial branch sizes, thicknesses and non-standard geometries
Why Should You Buy 254 SMO Cross from Metalx Nickel & Alloys?
  • Experienced 254 SMO Cross 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 Cross Fittings 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 Cross sizes, subject to current stock and availability.
  • Custom 254 SMO Cross Supply according to customer drawings, size, schedule, wall thickness and branch dimensions.
  • Equal & Reducing Cross Supply for standard and specialized industrial 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 Cross Fittings during handling, storage and international transportation.
  • Worldwide 254 SMO Cross 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 Cross 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, branch dimensions, 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 Cross shipments to the UAE, Saudi Arabia, Qatar, Oman, Africa, Singapore, Europe and other destinations.
 

Key Features of 254 SMO Cross

  • Super Austenitic Stainless Steel Construction – Manufactured from 254 SMO for highly demanding corrosion-resistant piping applications.
  • High Molybdenum Content – Provides excellent resistance to pitting and crevice corrosion in chloride-rich environments.
  • High Chromium Content – Contributes to strong general corrosion resistance.
  • Nitrogen Alloying – Supports mechanical strength and localized corrosion resistance.
  • 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 – Suitable for selected demanding chloride-service environments.
  • High General Corrosion Resistance – Suitable for a wide range of aggressive chemical conditions.
  • Four-Way Piping Connection – Provides multiple connection points within a piping system.
  • Equal Cross Configuration – Suitable where all required connections have the same nominal size.
  • Reducing Cross Configuration – Suitable where one or more branch connections require different sizes.
  • Efficient Multi-Directional Flow Connection – Allows multiple process lines to be connected through one fitting.
  • Reliable Butt-Weld Connection – Provides a permanent welded connection when properly fabricated.
  • Smooth Branch Transitions – Designed for practical integration of branch piping.
  • Wide Size Availability – Available in different nominal pipe sizes and outside diameters.
  • 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 – Can be welded using suitable procedures for super-austenitic stainless steel.
  • Good Fabrication Characteristics – Suitable for controlled forming and fabrication processes.
  • Pickled & Passivated Options – Surface treatment can be supplied according to project requirements.
  • PMI Verification – Positive Material Identification can be arranged where required.
  • Marine Applications – Useful for selected seawater and marine-service systems.
  • Desalination Applications – Suitable for selected desalination and seawater-treatment equipment.
  • Offshore Applications – Can be considered for selected offshore piping systems.
  • Chemical Processing Applications – Suitable for selected aggressive chemical process lines.
  • Oil & Gas Applications – Useful for selected upstream, downstream and offshore systems.
  • Pulp & Paper Applications – Suitable for selected corrosive process environments.
  • Flue Gas Desulfurization Applications – Can be considered for selected pollution-control systems.
  • 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 Branch Dimensions – Branch sizes and configurations can be supplied according to customer drawings.
  • Multiple Surface Options – Mill finish, pickled, passivated or other specified finishes can be supplied.
  • 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 – Cross fittings can be suitably packed for handling, storage and international transportation.
  • Global 254 SMO Cross Exporter – METALX NICKEL & ALLOYS supplies 254 SMO Cross Fittings to international buyers, distributors, traders, stockholders and industrial end users.
Specification254 SMO Cross Details
Product Name254 SMO Cross
Material Grade254 SMO / 6Mo Stainless Steel
UNS DesignationS31254
Werkstoff Number1.4547
Material TypeSuper Austenitic Stainless Steel
Material StandardASTM A403 / ASME SA403, where applicable
Dimensional StandardASME B16.9, where applicable
Cross TypeEqual Cross / Reducing Cross
Connection TypeButt Weld
SizeAs per applicable standard or customer specification
Wall ThicknessDifferent schedules and customized thicknesses
Branch SizeEqual or reducing branch sizes as required
ManufacturingWrought / Formed, as applicable
ConfigurationSeamless / Welded, depending on size and specification
End PreparationBevelled Ends for Butt Welding
Heat TreatmentSolution Annealed as applicable
Surface FinishMill Finish, Pickled, Passivated or customer-specified finish
TestingChemical, mechanical, dimensional, visual, PMI and other specified inspections
DocumentationMTC, inspection reports and relevant quality documents as required
CustomizationSize, thickness, schedule, branch dimensions, finish, testing and documentation
PackingExport-worthy packing suitable for safe international transportation
ApplicationsDesalination, Marine, Chemical Processing, Oil & Gas, Pulp & Paper, Water Treatment and Pollution Control
What type of stainless steel is 254 SMO?

254 SMO is a super-austenitic stainless steel containing high chromium, molybdenum and nitrogen levels.

Its high alloy content provides excellent resistance to pitting, crevice corrosion and chloride stress corrosion cracking in suitable service conditions.

ASTM A403 / ASME SA403 can be applicable to wrought austenitic stainless-steel fittings, subject to the exact product requirements.

The common configurations are Equal Cross and Reducing Cross.

Yes. Material Test Certificates, inspection reports and relevant quality documents can be supplied according to customer and project requirements.

Testing can include chemical analysis, mechanical testing, dimensional inspection, visual inspection, hydrostatic testing and other specified tests.

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