MetalX Nickel Alloys

Hastelloy C276 Flanges

SpecificationDetails
Product NameHastelloy C276 Flanges
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Chromium-Molybdenum-Tungsten Alloy
Chemical CompositionNickel Balance, Chromium approximately 14.5–16.5%, Molybdenum approximately 15–17%, Tungsten approximately 3–4.5%, Iron approximately 4–7%, with controlled carbon and other elements
Flange TypeWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges
Manufacturing TypeForged / Hot Forged / Precision Machined
Flange StandardASTM B564 / ASME SB564, as applicable
Dimensional StandardASME B16.5 / ASME B16.47, as applicable
Size1/2″ to 24″ or As per Customer Requirement
Pressure ClassClass 150 / 300 / 600 / 900 / 1500 / 2500, as applicable
Connection TypeFlanged Connection
Facing TypeRaised Face / Flat Face / Ring Type Joint, as applicable
Bore TypeStandard Bore / Heavy Bore / Customized Bore
Surface FinishMachined / Polished / As Specified
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per ASME B16.5 / ASME B16.47 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 corrosion in highly aggressive chemical environments
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 oxidizing and reducing acids under suitable service conditions
Oxidation ResistanceExcellent resistance to oxidation in demanding environments
WeldingSuitable for welding using appropriate nickel-alloy welding procedures
FabricationSuitable for machining and specialized fabrication using appropriate procedures
Dimensional AccuracyPrecision dimensions according to applicable ASME standards
Available FormsWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges
CustomizationSize, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation
InspectionDimensional, Visual and Material Inspection as Required
MarkingSize, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Flanges Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical Processing, Petrochemical, Pollution Control, Waste Treatment, Pulp & Paper, Marine, Power Generation, Heat Exchangers and Highly Corrosive Process Piping

1. Most Common Types of Hastelloy C276 Flanges

TypeDetails
Hastelloy C276 Weld Neck FlangeDesigned for demanding high-pressure and corrosive piping systems requiring a strong welded connection.
Hastelloy C276 Slip-On FlangeFits over the pipe and is welded in position for suitable industrial piping applications.
Hastelloy C276 Blind FlangeUsed to close pipe ends, valves, vessels and equipment nozzles in highly corrosive process systems.
Hastelloy C276 Socket Weld FlangeSuitable for smaller-diameter piping systems requiring a compact socket weld connection.
Hastelloy C276 Threaded FlangeProvides a threaded connection where welding may not be preferred, subject to application requirements.
Hastelloy C276 Lap Joint FlangeUsed with a compatible stub end where frequent assembly and disassembly may be required.
Hastelloy C276 Orifice FlangeUsed in flow measurement systems requiring an orifice plate arrangement.
Hastelloy C276 Ring Type Joint FlangeFeatures an RTJ facing for demanding pressure and temperature applications.
Customized Hastelloy C276 FlangeAvailable according to customer drawings, size, pressure class, facing, bore, dimensions, testing and documentation requirements.

2. Hastelloy C276 Flanges – Technical Specifications

SpecificationDetails
Product NameHastelloy C276 Flanges
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Chromium-Molybdenum-Tungsten Alloy
Flange TypeWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice
Manufacturing TypeForged / Hot Forged / Precision Machined
Flange StandardASTM B564 / ASME SB564, as applicable
Dimensional StandardASME B16.5 / ASME B16.47, as applicable
Size1/2″ to 24″ or As per Customer Requirement
Pressure ClassClass 150 / 300 / 600 / 900 / 1500 / 2500, as applicable
Connection TypeFlanged Connection
Facing TypeRaised Face / Flat Face / Ring Type Joint, as applicable
Bore TypeStandard Bore / Heavy Bore / Customized Bore
Surface FinishMachined / Polished / As Specified
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per ASME B16.5 / ASME B16.47 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 corrosion in highly aggressive chemical environments
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 oxidizing and reducing acids under suitable service conditions
Oxidation ResistanceExcellent resistance to oxidation in demanding environments
WeldingSuitable for welding using appropriate nickel-alloy welding procedures
FabricationSuitable for machining and specialized fabrication using appropriate procedures
Dimensional AccuracyPrecision dimensions according to applicable ASME standards
Available FormsWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice Flanges
CustomizationSize, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation
InspectionDimensional, Visual and Material Inspection as Required
MarkingSize, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Flanges Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical Processing, Petrochemical, Pollution Control, Waste Treatment, Pulp & Paper, Marine, Power Generation, Heat Exchangers and Highly Corrosive Process Piping

3. Hastelloy C276 Flanges – Supply & Quality Details

ParameterDetails
Material IdentificationHastelloy C276 / Alloy C276 / UNS N10276 / W.Nr. 2.4819
Flange ConfigurationsWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Orifice
Size Range1/2″ to 24″ or As per Requirement
Pressure ClassesClass 150 / 300 / 600 / 900 / 1500 / 2500
ManufacturingForged / Hot Forged / Precision Machined
Applicable StandardsASTM B564 / ASME SB564 and ASME B16.5 / B16.47, as applicable
Facing OptionsRaised Face / Flat Face / Ring Type Joint
Bore OptionsStandard Bore / Heavy Bore / Customized Bore
Surface FinishMachined / Polished / As Specified
Heat TreatmentSolution Annealed / As Required
TestingChemical / Mechanical / Dimensional / Hardness / Visual / PMI / Other Tests
InspectionDimensional, Visual and Material Inspection
CertificationEN 10204 3.1 / 3.2
MarkingSize, Grade, Standard, Class, Facing and Heat/Batch Identification
Material TraceabilityHeat Number and Batch Identification as Applicable
CustomizationSize, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation
PackagingExport-Worthy Wooden Cases, Boxes, Pallets or Customized Packaging
DocumentationMTC, Inspection Reports, Test Certificates and Other Documents as Required
Export SupplyWorldwide Hastelloy C276 Flanges Supply
ApplicationsChemical Processing, Petrochemical, Pollution Control, Waste Treatment, Pulp & Paper, Marine, Power Generation, Heat Exchangers and Highly Corrosive Process Piping

Most Common Types Of Hastelloy C276 Flanges

TypeDetails
Hastelloy C276 Weld Neck FlangeDesigned for high-pressure and highly corrosive piping systems requiring a strong welded connection.
Hastelloy C276 Slip-On FlangeFits over the pipe and is welded in position for suitable industrial piping applications.
Hastelloy C276 Blind FlangeUsed to close pipe ends, valves, vessels and equipment nozzles in corrosive process systems.
Hastelloy C276 Socket Weld FlangeSuitable for smaller-diameter piping systems requiring a compact socket weld connection.
Hastelloy C276 Threaded FlangeProvides a threaded connection where welding may not be preferred, subject to application requirements.
Hastelloy C276 Lap Joint FlangeUsed with a compatible stub end where frequent assembly and disassembly may be required.
Hastelloy C276 Orifice FlangeUsed in flow measurement systems requiring an orifice plate arrangement.
Hastelloy C276 Ring Type Joint FlangeFeatures an RTJ facing for demanding pressure and temperature applications.
Hastelloy C276 Raised Face FlangeProvides a raised sealing surface for suitable gasketed piping and equipment connections.
Hastelloy C276 Flat Face FlangeFeatures a flat sealing face for applications requiring this facing configuration.
Customized Hastelloy C276 FlangeAvailable according to customer drawings, size, pressure class, facing, bore, dimensions, testing and documentation requirements.
Why Should You Buy Hastelloy C276 Flanges from Metalx Nickel & Alloys?
  • Experienced Hastelloy C276 Flanges Supplier & Exporter serving international buyers, importers, distributors, EPC contractors, stockholders, traders and industrial end users.
  • 20+ Years of 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 Hastelloy C276 Flanges Exporter offering Hastelloy C276 / Alloy C276 / UNS N10276 / W.Nr. 2.4819 Flanges 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 international supply markets.
  • Reliable Hastelloy C276 Flanges Supplier providing nickel-chromium-molybdenum-tungsten alloy flanges for demanding applications requiring excellent resistance to general corrosion, pitting, crevice corrosion, chloride-containing environments, oxidizing and reducing acids, and chloride-induced stress-corrosion cracking.
  • Wide Specialty Flanges Range including Hastelloy C276 Weld Neck Flanges, Hastelloy C276 Slip-On Flanges, Hastelloy C276 Blind Flanges, Hastelloy C276 Socket Weld Flanges, Hastelloy C276 Threaded Flanges, Hastelloy C276 Lap Joint Flanges, Hastelloy C276 Orifice Flanges, Hastelloy C22 Flanges, Inconel Flanges, Nickel Alloy Flanges and Alloy 20 Flanges.
Key FeatureDetails
Severe Corrosion ResistanceProvides excellent resistance to severe corrosion in aggressive chemical and process environments.
Pitting ResistanceStrong resistance to pitting and localized corrosion.
Crevice Corrosion ResistanceExcellent resistance to crevice corrosion under suitable service conditions.
Stress-Corrosion ResistanceGood resistance to stress-corrosion cracking in demanding applications.
Acid ResistanceSuitable for many oxidizing and reducing acid environments.
Aggressive Chemical ServiceWell suited for applications involving corrosive chemicals and process fluids.
High Mechanical StrengthProvides dependable mechanical performance and durability for industrial connections.
Multiple Flange ConfigurationsAvailable in Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint and custom configurations.
Multiple Pressure ClassesAvailable in Class 150, 300, 600, 900, 1500 and 2500, as required.
Multiple Facing OptionsRF, FF and RTJ facing configurations can be supplied according to application requirements.
Dimensional AccuracyPrecision manufacturing and machining support accurate installation and reliable equipment connections.
CustomizationSize, drilling, bore, facing, pressure class, dimensions, finish, testing and documentation can be customized.
Inspection & CertificationDimensional, visual, material and applicable testing can be arranged with required documentation.
Export-Ready SupplySuitable packaging, certification and documentation can be provided for domestic and international shipments.
SpecificationDetails
Product NameHastelloy C276 Flanges
Material GradeHastelloy C276 / Alloy C276
UNS DesignationUNS N10276
Werkstoff NumberW.Nr. 2.4819
Material TypeNickel-Molybdenum-Chromium Alloy
Flange TypeWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Custom Types
Manufacturing TypeForged / Precision Machined
Flange StandardASTM B564 / ASME SB564, as applicable
Dimensional StandardASME B16.5 / ASME B16.47 / MSS SP-44 and Other Applicable Standards
Size RangeAs per Customer Requirement and Applicable Standard
Pressure ClassClass 150 / 300 / 600 / 900 / 1500 / 2500
Connection TypeFlanged Connection
Facing TypeRaised Face (RF) / Flat Face (FF) / Ring Type Joint (RTJ) / Other Options as Required
Bore TypeStandard Bore / Heavy Bore / Customized Bore
Surface FinishAs per Applicable Standard or Customer Requirement
Heat TreatmentSolution Annealed / As per Applicable Material Specification
DimensionsAs per Applicable ASME Standard and Customer Requirements
MTCEN 10204 3.1 / 3.2, as Required
TestingDimensional / Visual / Chemical / Mechanical / PMI and Other Applicable Tests
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 severe general corrosion in aggressive chemical environments
Pitting ResistanceExcellent resistance to pitting and localized corrosion
Crevice Corrosion ResistanceExcellent resistance to crevice corrosion
Chloride ResistanceExcellent resistance to chloride-containing environments
Stress-Corrosion ResistanceGood to excellent resistance to stress-corrosion cracking under suitable service conditions
Acid ResistanceExcellent resistance to many oxidizing and reducing acids under suitable conditions
High-Temperature PerformanceSuitable for demanding industrial service within recommended operating limits
WeldingSuitable for welding using appropriate nickel-alloy welding procedures
FabricationSuitable for machining and specialized fabrication using appropriate procedures
Dimensional AccuracyPrecision dimensions according to applicable flange standards
Available FormsWeld Neck / Slip-On / Blind / Socket Weld / Threaded / Lap Joint / Custom Flanges
CustomizationSize, Flange Type, Pressure Class, Facing, Bore, Dimensions, Finish, Testing and Documentation
InspectionDimensional, Visual and Material Inspection as Required
MarkingSize, Grade, Standard, Class, Facing and Heat/Batch Identification as Applicable
OriginEuropean / American / Japanese / Korean and Other Approved Origins
Export SupplyWorldwide Hastelloy C276 Flanges Export Supply
Exporter SupportTechnical Specifications, Inspection, Certification, Export Packing, Documentation and International Shipment Coordination
ApplicationsChemical, Petrochemical, Pharmaceutical, Power, Pollution Control, Waste Treatment, Pulp & Paper and Corrosive Process Industries
1. What are Hastelloy C276 Flanges?

Hastelloy C276 Flanges are nickel-alloy flanges used to connect pipes, valves, pumps, vessels and other process equipment in highly corrosive industrial environments.

They are manufactured from Hastelloy C276 / Alloy C276 , identified by UNS N10276 and W.Nr. 2.4819 . The alloy is a nickel-molybdenum-chromium material with strong corrosion resistance.

Common types include Weld Neck, Slip-On, Blind, Socket Weld, Threaded and Lap Joint Flanges. Custom configurations can also be supplied according to customer requirements.

They can be supplied in Class 150, 300, 600, 900, 1500 and 2500 , depending on the flange size, type, applicable standard and project requirements.

Key advantages include excellent resistance to severe corrosion, pitting, crevice corrosion, chloride-containing environments, oxidizing and reducing acids, and good resistance to stress-corrosion cracking under suitable service conditions.

They are commonly used in chemical processing, petrochemical, pharmaceutical, power, pollution control, wastewater treatment, pulp and paper, marine, heat exchanger and highly corrosive process piping applications .

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