MetalX Nickel Alloys

Hastelloy C276 Socket Weld Union

Hastelloy C276 Socket Weld Union
SpecificationDetails
Product NameHastelloy C276 Socket Weld Union
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Molybdenum-Chromium-Tungsten Alloy
Chemical CompositionNickel Balance, Chromium approximately 14.5–16.5%, Molybdenum approximately 15–17%, Tungsten approximately 3–4.5%, Iron 4–7%, Carbon 0.01% max
Fitting TypeSocket Weld Union
Union TypeFull Union / Reducing Union
Manufacturing TypeForged / Hot Forged / Precision Machined
Fitting StandardASTM B366 / ASME SB366, as applicable
Dimensional StandardASME B16.11
Size1/8″ to 4″ NPS or As per Customer Requirement
Pressure ClassClass 3000 / 6000 / 9000, as applicable
Connection TypeSocket Weld
End ConnectionSocket Weld
Surface FinishBright / Pickled / Machined / Polished / Passivated / As Specified
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per ASME B16.11 and Customer Requirements
MTCEN 10204 3.1 / 3.2
TestingChemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required
Tensile StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
Yield StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
ElongationAs per Applicable Material Standard
DensityApproximately 8.89 g/cm³
Melting RangeApproximately 1325–1370°C
Corrosion ResistanceExcellent resistance to general and aggressive corrosion
Pitting ResistanceExcellent resistance to pitting and localized corrosion
Crevice Corrosion ResistanceExcellent resistance to crevice corrosion
Chloride ResistanceExcellent resistance to chloride-containing environments
Stress-Corrosion ResistanceExcellent resistance to chloride-induced stress-corrosion cracking
Acid ResistanceExcellent resistance to selected oxidizing and reducing acids
Oxidation ResistanceGood resistance to oxidation under suitable service conditions
High-Temperature PerformanceGood mechanical stability and corrosion resistance at elevated temperatures
WeldingSuitable for socket-welded piping systems using appropriate nickel-alloy welding procedures
FabricationSuitable for precision machining and specialized fabrication
Dimensional AccuracyPrecision dimensions according to ASME B16.11 and applicable requirements
Available FormsFull Socket Weld Union / Reducing Socket Weld Union / Forged Socket Weld Union
CustomizationSize, Union Type, Pressure Class, Dimensions, Finish, Testing and Documentation
InspectionDimensional, Visual and Material Inspection as Required
MarkingSize, Grade, Standard and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Socket Weld Union Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical Processing, Petrochemical, Pharmaceutical, Oil & Gas, Pollution Control, Power Generation, Marine, Wastewater Treatment and High-Performance Process Piping

1. Hastelloy C276 Socket Weld Union – Common Types

TypeDescription
Hastelloy C276 Full Socket Weld UnionUsed to connect two pipes of the same nominal size while providing a removable union connection.
Hastelloy C276 Reducing Socket Weld UnionUsed to connect piping sections with different nominal sizes where a reducing union configuration is required.
Hastelloy C276 Forged Socket Weld UnionForged construction provides good mechanical strength, durability and dimensional consistency.
Hastelloy C276 Class 3000 UnionSuitable for piping systems requiring Class 3000 pressure-rated socket weld unions.
Hastelloy C276 Class 6000 UnionDesigned for higher-pressure piping applications requiring Class 6000 fittings.
Hastelloy C276 Class 9000 UnionUsed for specialized high-pressure piping systems requiring Class 9000 fittings.
Hastelloy C276 Precision Machined UnionPrecision-machined construction provides accurate socket dimensions and reliable pipe fit-up.
Hastelloy C276 Customized UnionAvailable with customized size, dimensions, pressure class, surface finish, testing and documentation.

2. Hastelloy C276 Socket Weld Union – Technical Specifications

SpecificationDetails
Product NameHastelloy C276 Socket Weld Union
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Molybdenum-Chromium-Tungsten Alloy
Fitting TypeSocket Weld Union
Union TypeFull Union / Reducing Union
Manufacturing TypeForged / Hot Forged / Precision Machined
Fitting StandardASTM B366 / ASME SB366, as applicable
Dimensional StandardASME B16.11
Size Range1/8″ to 4″ NPS or As per Customer Requirement
Pressure ClassClass 3000 / 6000 / 9000, as applicable
Connection TypeSocket Weld
End ConnectionSocket Weld
Surface FinishBright / Pickled / Machined / Polished / Passivated / As Specified
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per ASME B16.11 and Customer Requirements
MTCEN 10204 3.1 / 3.2
TestingChemical / Mechanical / Dimensional / Hardness / Visual / PMI and Other Tests as Required
Tensile StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
Yield StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
ElongationAs per Applicable Material Standard
DensityApproximately 8.89 g/cm³
Melting RangeApproximately 1325–1370°C
Corrosion ResistanceExcellent resistance to general and aggressive corrosion
Pitting ResistanceExcellent resistance to pitting and localized corrosion
Crevice Corrosion ResistanceExcellent resistance to crevice corrosion
Chloride ResistanceExcellent resistance to chloride-containing environments
Stress-Corrosion ResistanceExcellent resistance to chloride-induced stress-corrosion cracking
Acid ResistanceExcellent resistance to selected oxidizing and reducing acids
Oxidation ResistanceGood resistance to oxidation under suitable service conditions
High-Temperature PerformanceGood mechanical stability and corrosion resistance at elevated temperatures
WeldingSuitable for socket-welded piping systems using appropriate nickel-alloy welding procedures
FabricationSuitable for precision machining and specialized fabrication
Dimensional AccuracyPrecision dimensions according to ASME B16.11 and applicable requirements
Available FormsFull Socket Weld Union / Reducing Socket Weld Union / Forged Socket Weld Union
CustomizationSize, Union Type, Pressure Class, Dimensions, Finish, Testing and Documentation
InspectionDimensional, Visual and Material Inspection as Required
MarkingSize, Grade, Standard and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Socket Weld Union Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical Processing, Petrochemical, Pharmaceutical, Oil & Gas, Pollution Control, Power Generation, Marine, Wastewater Treatment and High-Performance Process Piping

3. Hastelloy C276 Socket Weld Union – Supply & Export Details

Supply ParameterAvailable Options
MaterialHastelloy C276 / Alloy C276 / UNS N10276
Union ConfigurationFull Union / Reducing Union
Size1/8″ to 4″ NPS or As per Requirement
Pressure ClassesClass 3000 / 6000 / 9000
ManufacturingForged / Hot Forged / Precision Machined
ConnectionSocket Weld
Surface FinishBright / Pickled / Machined / Polished / Passivated
Heat TreatmentSolution Annealed / As Required
TestingChemical / Mechanical / Dimensional / Visual / Hardness / PMI / NDT as Required
InspectionDimensional, Visual and Material Inspection
CertificationEN 10204 3.1 / 3.2
Material TraceabilityHeat Number, Grade and Batch Identification
MarkingSize, Grade, Standard and Heat/Batch Identification
Third-Party InspectionAvailable as per Customer Requirement
CustomizationSize, Union Type, Pressure Class, Finish, Testing and Documentation
PackingExport-Worthy / Seaworthy Protective Packaging
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Exporter SupportTechnical Specifications, Inspection, Certification, Packing and Shipment Coordination
Export SupplyWorldwide Hastelloy C276 Socket Weld Union Supply
ApplicationsChemical, Petrochemical, Oil & Gas, Pharmaceutical, Marine, Power Generation, Pollution Control, Wastewater Treatment and Industrial Process Piping

Most Common Types Of Hastelloy C276 Socket Weld Union

TypeDescription
Hastelloy C276 Full Socket Weld UnionUsed to connect two pipes of the same nominal size while allowing convenient assembly and disassembly.
Hastelloy C276 Reducing Socket Weld UnionUsed to connect pipes of different nominal sizes where a reducing union configuration is required.
Hastelloy C276 Forged Socket Weld UnionForged construction provides high structural integrity, good strength and dimensional consistency.
Hastelloy C276 Class 3000 Socket Weld UnionSuitable for piping systems requiring Class 3000 pressure-rated socket weld unions.
Hastelloy C276 Class 6000 Socket Weld UnionDesigned for higher-pressure piping applications requiring Class 6000 fittings.
Hastelloy C276 Class 9000 Socket Weld UnionUsed for specialized high-pressure piping systems requiring Class 9000 fittings.
Hastelloy C276 Precision Machined UnionPrecision machining provides accurate dimensions and reliable socket fit-up.
Hastelloy C276 Customized Socket Weld UnionCan be supplied with customized sizes, dimensions, pressure classes, finishes, testing and documentation according to project requirements.
Why Should You Buy Hastelloy C276 Socket Weld Unions from MetalX Nickel & Alloys?
  • Experienced Hastelloy C276 Socket Weld Union Supplier & Exporter serving international buyers, distributors, EPC contractors, stockholders, traders and industrial end users.
  • 20+ Years of Nickel Alloy Industry Experience in supplying corrosion-resistant, high-performance and specialty nickel alloy products across the UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain, Africa, Europe, Asia and other global markets.
  • Specialized Hastelloy C276 Socket Weld Union Exporter offering Hastelloy C276 / Alloy C276 / UNS N10276 / W.Nr. 2.4819 Socket Weld Unions according to applicable international standards and customer requirements.
  • Global Hastelloy C276 Sourcing Network with access to reputed nickel alloy mills, manufacturers, authorized suppliers and approved stockholders across the USA, Europe, Japan, South Korea and other major supply markets.
  • Reliable Hastelloy C276 Socket Weld Union Supplier providing nickel-molybdenum-chromium-tungsten alloy fittings for applications requiring excellent general corrosion resistance, pitting and crevice corrosion resistance, chloride resistance, acid resistance and reliable mechanical strength.
  • Wide Hastelloy C276 Fittings Range including Hastelloy C276 Socket Weld Elbows, Hastelloy C276 Socket Weld Tees, Hastelloy C276 Socket Weld Couplings, Hastelloy C276 Socket Weld Unions, Hastelloy C276 Socket Weld Crosses, Hastelloy C276 Socket Weld Caps and Hastelloy C276 Socket Weld Reducers.
Key FeatureDetails
Excellent Corrosion ResistanceProvides excellent resistance to severe general corrosion and aggressive chemical environments.
Pitting & Crevice Corrosion ResistanceOffers strong resistance to pitting and crevice corrosion in demanding service conditions.
Stress-Corrosion Cracking ResistanceProvides excellent resistance to chloride-induced stress-corrosion cracking.
Aggressive Chemical ResistanceSuitable for piping systems exposed to a wide range of aggressive chemical process media.
High Mechanical StrengthProvides good mechanical strength, durability and structural stability for demanding piping applications.
Compact Socket Weld DesignProvides a strong and compact connection, particularly suitable for smaller-diameter piping systems.
Convenient Union ConnectionUnion construction allows easier assembly, disassembly and maintenance where required.
Forged ConstructionForged manufacturing provides good structural integrity and dimensional consistency.
Multiple Pressure ClassesAvailable in Class 3000, 6000 and 9000 configurations, subject to size and applicable specifications.
Full & Reducing OptionsAvailable in full and reducing union configurations for different piping requirements.
Precision Fit-UpAccurate socket dimensions support proper pipe alignment and reliable installation.
High-Performance ServiceSuitable for demanding process conditions involving corrosive fluids and elevated temperatures within applicable design limits.
Customizable SupplySize, union configuration, pressure class, finish, testing and documentation can be customized according to project requirements.
Inspection & CertificationMTC, PMI, dimensional inspection and other quality documentation can be supplied as required.
Wide Industrial ApplicationsSuitable for chemical, petrochemical, pharmaceutical, oil & gas, marine, power, wastewater and process industries.
Export-Ready SupplyAvailable with material traceability, proper identification, protective packaging and export documentation.
SpecificationDetails
Product NameHastelloy C276 Socket Weld Union
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Molybdenum-Chromium-Tungsten Alloy
Fitting TypeSocket Weld Union
Union TypeFull Union / Reducing Union
Manufacturing TypeForged / Hot Forged / Precision Machined
Fitting StandardASTM B366 / ASME SB366, as applicable
Dimensional StandardASME B16.11
Size RangeAs per applicable standard and customer requirement
Pressure ClassClass 3000 / 6000 / 9000, as applicable
Connection TypeSocket Weld
End TypeSocket Weld
Surface FinishMachined / Smooth / Pickled / Polished / Passivated / As Specified
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per ASME B16.11 and Customer Requirements
TestingChemical / Mechanical / Dimensional / Visual / Hardness / PMI and Other Tests as Required
CertificationEN 10204 3.1 / 3.2, as required
MTCMill Test Certificate Available as Required
InspectionDimensional, Visual and Material Inspection as Required
Tensile StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
Yield StrengthAs per Applicable Hastelloy C276 Material Specification and Condition
ElongationAs per Applicable Material Standard
DensityApproximately 8.89 g/cm³
Melting RangeApproximately 1325–1370°C
Corrosion ResistanceExcellent resistance to general and aggressive corrosion
Pitting ResistanceExcellent resistance to pitting and localized corrosion
Crevice Corrosion ResistanceExcellent resistance to crevice corrosion
Chloride ResistanceExcellent resistance to chloride-containing environments
Stress-Corrosion ResistanceExcellent resistance to chloride-induced stress-corrosion cracking
Acid ResistanceExcellent resistance to selected oxidizing and reducing acids
Oxidation ResistanceGood resistance to oxidation under suitable service conditions
High-Temperature PerformanceGood mechanical stability and corrosion resistance at elevated temperatures
WeldingSuitable for socket-welded piping systems using appropriate nickel-alloy welding procedures
FabricationSuitable for precision machining and specialized fabrication
Dimensional AccuracyPrecision dimensions according to ASME B16.11 and applicable requirements
Available FormsFull Socket Weld Union / Reducing Socket Weld Union / Forged Socket Weld Union
CustomizationSize, Union Type, Pressure Class, Dimensions, Finish, Testing and Documentation
MarkingSize, Grade, Standard and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Socket Weld Union Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical Processing, Petrochemical, Pharmaceutical, Oil & Gas, Power Generation, Marine, Pollution Control, Wastewater Treatment and Industrial Process Piping
1. What is a Hastelloy C276 Socket Weld Union?

A Hastelloy C276 Socket Weld Union is a forged nickel-alloy fitting used to connect two piping sections with a socket weld connection. Its union design allows convenient assembly and disassembly during maintenance.

It is manufactured from Hastelloy C276 / Alloy C276, with the designation UNS N10276 and Werkstoff Number W.Nr. 2.4819.

Common configurations include Full Socket Weld Union and Reducing Socket Weld Union. Forged and precision-machined options can also be supplied according to project requirements.

Hastelloy C276 Socket Weld Unions can be supplied in sizes according to the applicable standard and customer requirements. Common pressure classes include Class 3000, Class 6000 and Class 9000, subject to size and specification.

The dimensional requirements are generally based on ASME B16.11, while applicable material and fitting requirements can be supplied according to ASTM B366 / ASME SB366.

They are commonly used in chemical processing, petrochemical, pharmaceutical, oil & gas, power generation, marine, pollution-control, wastewater treatment and industrial process piping where excellent corrosion resistance and reliable connections are required.

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