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Incoloy 800HT Pipes

Specification Incoloy 800HT Pipe Details 
Product NameIncoloy 800HT Pipe
Material GradeIncoloy 800HT / Alloy 800HT
UNS DesignationUNS N08811
Werkstoff NumberW.Nr. 1.4959
Material TypeNickel-Iron-Chromium Alloy
Chemical CompositionNickel 30–35%, Chromium 19–23%, Iron 39.5% min, Carbon 0.06–0.10%, Aluminium 0.25–0.60%, Titanium 0.25–0.60%, Aluminium + Titanium 0.85–1.20%
Manufacturing TypeSeamless / Welded
Seamless Pipe StandardASTM B407 / ASME SB407
Welded Pipe StandardASTM B154 / ASME SB154
Seamless Tube StandardASTM B163 / ASME SB163
Welded Tube StandardASTM B515 / ASME SB515
Outside DiameterAs per standard / Customer Requirement
OD RangeCommonly available from approximately 6.35 mm to 610 mm, depending on product form and supplier capability
Wall ThicknessAs per Schedule / Customer Requirement
Pipe ScheduleSCH 5S, 10S, 20, 40S, 40, 60, 80S, 80, 100, 120, 140, 160, XXS and as required
LengthSingle Random / Double Random / Fixed or Customized Length
End TypePlain End / Beveled End / Threaded & Coupled, as specified
Surface FinishMill Finish / Pickled / Solution Annealed / Polished / Customized
Heat TreatmentSolution Annealed
Grain SizeASTM No. 5 or coarser, as required for 800HT high-temperature service
MTCEN 10204 3.1 / 3.2
TestingChemical, Mechanical, Dimensional, Visual, Hydrostatic, Eddy Current and NDT as specified
Tensile StrengthMinimum approximately 450 MPa
Yield StrengthMinimum approximately 170 MPa
ElongationMinimum approximately 30%
DensityApproximately 7.94 g/cm³
Melting RangeApproximately 1357–1385°C
Corrosion ResistanceExcellent resistance to oxidation, carburization, nitridation and various high-temperature corrosive environments
High-Temperature PerformanceExcellent creep and stress-rupture resistance for prolonged high-temperature service
Aluminium + Titanium0.85–1.20% combined, a key characteristic of Alloy 800HT
Filler MetalERNiCr-3 / compatible nickel-alloy filler, as specified
Welding ElectrodeENiCrFe-2 / compatible electrode, as specified
Available FormRound Pipe / Tube
CustomizationOD, WT, Schedule, Length, Finish, Heat Treatment, Testing and Documentation
OriginEuropean / American / Japanese / Korean and other approved origins
Export SupplyWorldwide Export Supply
Exporter SupportTechnical specification, inspection, certification, export packing and international shipment coordination
ApplicationsEthylene Cracking Furnaces, Steam Methane Reformers, Petrochemical Plants, Chemical Processing, Heat Treatment Equipment, Industrial Furnaces, Power Generation, Heat Exchangers and High-Temperature Process Piping

 

Incoloy 800HT Pipe – Standard Dimension

Size (NPS)OD (in.)WT (in.)OD (mm)WT (mm)
20″20.0000.594508.015.09
18″18.0000.562457.014.27
16″16.0000.500406.412.70
14″14.0000.437355.611.13
12″12.7500.406323.810.31
10″10.7500.365273.09.27
8″8.6250.322219.18.18
6″6.6250.280168.37.11
5″5.5630.258141.36.55
4″4.5000.237114.36.02
3 1/2″4.0000.226101.65.74
3″3.5000.21688.95.49
2 1/2″2.8750.20373.05.16
2″2.3750.15460.33.91
1 1/2″1.9000.14548.33.68
1 1/4″1.6600.14042.23.56
1″1.3150.13333.43.38
3/4″1.0500.11326.72.87
1/2″0.8400.10921.32.77
3/8″0.6750.09117.12.31
1/4″0.5400.08813.72.24
1/8″0.4050.06810.31.73

 

Dimensions of ASTM B407 UNS N08811 Incoloy 800HT Pipe

Size (NPS)OD (mm)OD (in.)WT (mm)WT (in.)ScheduleWeight (kg/m)
1/2″21.340.8402.110.08310S1.02
1/2″21.340.8402.770.10940S / STD1.27
1/2″21.340.8403.730.14780S1.62
3/4″26.671.0502.110.08310S1.30
3/4″26.671.0502.870.11340S / STD1.68
3/4″26.671.0503.910.15480S2.20
1″33.401.3152.770.10910S2.13
1″33.401.3153.380.13340S / STD2.50
1″33.401.3154.550.17980S3.33
1 1/4″42.161.6602.770.10910S2.73
1 1/4″42.161.6603.560.14040S / STD3.39
1 1/4″42.161.6604.850.19180S4.46
1 1/2″48.261.9002.770.10910S3.16
1 1/2″48.261.9003.680.14540S / STD4.05
1 1/2″48.261.9005.080.20080S5.49
2″60.332.3752.770.10910S3.99
2″60.332.3753.910.15440S / STD5.39
2″60.332.3755.540.21880S7.47
2 1/2″73.032.8753.050.12010S5.35
2 1/2″73.032.8755.160.20340S8.74
2 1/2″73.032.8757.010.27680S11.65
3″88.903.5003.050.12010S6.56
3″88.903.5005.490.21640S11.50
3″88.903.5007.620.30080S15.62
3 1/2″101.604.0003.050.12010S7.53
3 1/2″101.604.0005.740.22640S13.84
3 1/2″101.604.0008.080.31880S19.01
4″114.304.5003.050.12010S8.50
4″114.304.5006.020.23740S16.35
4″114.304.5008.560.33780S22.67
5″141.305.5636.550.25840S22.12
5″141.305.5639.530.37580S31.40
6″168.286.6253.400.13410S14.04
6″168.286.6257.110.28040S28.72
6″168.286.62510.970.43280S43.20
8″219.088.6258.180.32240S43.20
8″219.088.62512.700.50080S65.60
10″273.0510.7509.270.3654060.00
10″273.0510.75015.090.5948095.00
12″323.8512.75010.310.4064080.00
12″323.8512.75017.450.68780131.00

 

Incoloy 800HT Pipe – Schedule Chart

Nominal SizeO.D. (in.)1608080S & E.H.4040S & Std1010S
1/8″0.405—0.0950.0950.0680.0680.0490.049
1/4″0.540—0.1190.1190.0880.0880.0650.065
3/8″0.675—0.1260.1260.0910.0910.0650.065
1/2″0.8400.1870.1470.1470.1090.1090.0830.083
3/4″1.0500.2180.1540.1540.1130.1130.0830.083
1″1.3150.2500.1790.1790.1330.1330.1090.109
1 1/4″1.6600.2500.1910.1910.1400.1400.1090.109
1 1/2″1.9000.2810.2000.2000.1450.1450.1090.109
2″2.3750.3430.2180.2180.1540.1540.1090.109
2 1/2″2.8750.3750.2760.2760.2030.2030.1200.120
3″3.5000.4370.3000.3000.2160.2160.1200.120
3 1/2″4.000—0.3180.3180.2260.2260.1200.120
4″4.5000.5310.3370.3370.2370.2370.1200.120
5″5.5630.6250.3750.3750.2580.2580.1340.134
6″6.6250.7180.4320.4320.2800.2800.1340.134
8″8.6250.9060.5000.5000.3220.3220.1480.148
10″10.7501.1250.5930.5000.3650.3650.1650.165
12″12.7501.3120.6870.5000.4060.3750.1800.180
14″14.0001.4060.7500.5000.4370.3750.1880.188
16″16.0001.5930.8430.5000.5000.3750.1880.188
18″18.0001.7810.9370.5000.5620.3750.1880.188
20″20.0001.9681.0310.5000.5930.3750.2180.218

 

Why Should You Buy Incoloy 800HT Pipes from Metalx Nickel & Alloys?

  • Experienced Incoloy 800HT Pipe Supplier & Exporter serving international buyers, distributors, EPC contractors, stockholders and industrial end users.
  • 20+ Years of Nickel Alloy Industry Experience in supplying high-temperature and corrosion-resistant alloy products to customers across the UAE, Saudi Arabia, Africa and other global markets.
  • Specialized Incoloy 800HT Exporter offering Incoloy 800HT / UNS N08811 pipes for demanding high-temperature applications.
  • Global Sourcing Network with access to reputed nickel alloy mills, manufacturers and approved stockholders across Europe, USA, Japan and other major supply markets.
  • Wide Nickel Alloy Product Range including Incoloy 800HT, Incoloy 800H, Incoloy 800, Inconel, Hastelloy, Monel and other specialized nickel-based alloys.
  • Ready Stock Availability for selected Incoloy 800HT Pipe sizes, subject to current stock and availability.
  • Custom Incoloy 800HT Pipe Supply according to customer drawings, outside diameter, wall thickness, schedule, length and project specifications.
  • Cut-to-Size Service available for applicable sizes and customer requirements.
  • ASTM / ASME Specification Supply according to applicable requirements, including ASTM B407 / ASME SB407 where applicable.
  • 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.
  • 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 ASTM/ASME standards and customer specifications.
  • Hydrostatic & NDT Support can be arranged where required by the applicable specification or purchase order.
  • Heat Treatment Support – Solution-treated material can be supplied according to the applicable material specification.
  • Grain Size Control – Material can be supplied according to applicable grain-size requirements specified by the relevant standard.
  • Export-Ready Packing designed to protect Incoloy 800HT Pipes during handling, storage and international transportation.
  • Worldwide Incoloy 800HT Pipe 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.
  • Incoloy 800HT Pipe Export Support for EPC contractors, engineering companies, petrochemical plants, furnace manufacturers, heat exchanger manufacturers and power-generation facilities.
  • Technical Support from Export Enquiry to Shipment covering grade, size, schedule, wall thickness, heat treatment, grain size, 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 Incoloy 800HT Pipe shipments to the UAE, Saudi Arabia, Qatar, Oman, Africa, Singapore, Europe and other destinations.
 

Key Features of Incoloy 800HT Pipes

  • High-Temperature Performance – Incoloy 800HT is designed for demanding elevated-temperature applications requiring reliable mechanical properties.
  • Nickel-Iron-Chromium Alloy – Provides a useful combination of high-temperature strength, oxidation resistance and corrosion resistance.
  • Excellent Creep & Rupture Strength – Particularly valued for applications involving prolonged exposure to elevated temperatures.
  • Controlled Chemical Composition – Carbon, aluminum and titanium levels are controlled to support high-temperature mechanical performance.
  • Good Oxidation Resistance – Nickel and chromium provide resistance to oxidation during high-temperature service.
  • Good Corrosion Resistance – Suitable for various industrial environments involving elevated temperatures and corrosive conditions.
  • Solution-Treated Condition – Normally supplied in a solution-treated condition according to the applicable material specification.
  • Controlled Grain Size – Grain-size requirements can be controlled according to the relevant ASTM/ASME specification.
  • Seamless Pipe Availability – Incoloy 800HT is commonly supplied as seamless pipe according to the applicable product specification.
  • ASTM / ASME Compliance – Can be supplied according to applicable ASTM and ASME requirements, including ASTM B407 / ASME SB407 where applicable.
  • Wide Dimensional Availability – Different outside diameters, wall thicknesses and schedules can be supplied.
  • Flexible Length Options – Standard, random, double-random and cut lengths can be supplied depending on order requirements.
  • Multiple End Configurations – Plain, beveled and other permitted end configurations can be supplied according to specification.
  • High-Temperature Processing Applications – Suitable for demanding processing systems operating at elevated temperatures.
  • Petrochemical Applications – Used in selected petrochemical and process-industry equipment.
  • Furnace Applications – Suitable for furnace components and equipment exposed to prolonged high-temperature service.
  • Heat Exchanger Applications – Can be used in selected heat-transfer and heat-exchanger systems.
  • Power Generation Applications – Suitable for selected high-temperature equipment and piping applications in power-generation facilities.
  • Reliable Material Traceability – MTCs and inspection documents can be supplied according to order requirements.
  • Quality Inspection Support – Testing and inspection can be arranged according to applicable specifications and purchase orders.
  • Customized Supply – Dimensions, schedules, lengths, end preparation, testing and documentation can be tailored to project requirements.
  • Export-Ready Packing – Pipes can be prepared with suitable export packing for safe international transportation.
  • Global Supply Support – METALX NICKEL ALLOYS can supply Incoloy 800HT Pipes to international buyers and industrial customers.
SpecificationIncoloy 800HT Pipe Details
Product NameIncoloy 800HT Pipes
Material GradeIncoloy 800HT
UNS DesignationUNS N08811
Material TypeNickel-Iron-Chromium Alloy
Product TypeSeamless Pipes
ManufacturingSeamless, specification dependent
Applicable StandardsASTM / ASME specifications applicable to the grade and product form
Common StandardASTM B407 / ASME SB407, where applicable
Outside DiameterAs per customer requirement
Wall ThicknessAs per customer requirement
ScheduleAs required
LengthStandard, random, double-random or cut lengths, depending on order
End TypePlain / Beveled, where applicable
Surface FinishAs per applicable specification
Heat TreatmentNormally supplied in solution-treated condition, with heat treatment controlled according to applicable specification
Grain SizeControlled according to applicable material specification
Chemical CompositionNickel, chromium and iron with controlled additions of carbon, aluminum and titanium
TestingAs per applicable specification and purchase requirements
DocumentationMTC and inspection documents as required
ApplicationsHigh-temperature processing, petrochemical, furnaces, heat exchangers, power generation and other demanding industrial applications
CustomizationOutside diameter, wall thickness, schedule, length, end finish, testing and documentation as required
Export SupplyAvailable for international industrial and engineering projects

 

1. What is Incoloy 800HT Pipe?


Incoloy 800HT Pipe is a high-temperature nickel-iron-chromium alloy pipe designed for applications requiring good creep, rupture and high-temperature strength.

The UNS designation of Incoloy 800HT is UNS N08811.

A commonly applicable specification is ASTM B407 / ASME SB407 for seamless pipe, subject to the exact product requirements.

The alloy primarily contains nickel, chromium and iron, with controlled additions of carbon, aluminum and titanium.

Yes. The alloy is generally supplied in a solution-treated condition, with heat treatment requirements controlled according to the applicable specification.

Yes. Grain-size requirements can be controlled according to the applicable ASTM/ASME material specification.

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