Incoloy 800 / 800H / 800HT Pipes & Tubes – Alloy 800 Seamless Pipe Manufacturer & Supplier

Incoloy 800 Tube, Incoloy 800H/800HT Pipe

Table of Content

All products conform to ASTM B407 / ASME SB407, ASTM B514, ASTM B515, and ASTM B163 standards. Also known as alloy 800 pipe, these nickel-iron-chromium alloys offer superior oxidation, carburization, and high-temperature corrosion resistance. Common trade names include Ferrochronin 800, Nickelvac 800, and Nicrofer 3220. Browse our complete Incoloy Products range or view all Incoloy Pipes & Tubes grades.

Request a QuoteCalculate Pipe Weight

What Is Incoloy 800? Understanding the 800, 800H, and 800HT Series

Incoloy 800 is a nickel-iron-chromium alloy available in three variants (UNS N08800, UNS N08810, UNS N08811), also referred to as DIN 1.4876, DIN 1.4958, and DIN 1.4959 respectively. These superalloys provide high strength and resist oxidation and carburization at elevated temperatures. These alloys are also specified under DIN designations, DIN 1.4876 (Incoloy 800), DIN 1.4958 (800H), and DIN 1.4959 (800HT), widely referenced in European project specifications. They are also supplied under trade names Ferrochronin 800, Nickelvac 800, and Nicrofer 3220, depending on the original melt source. All designations refer to the same UNS composition requirements.

 Incoloy 800 pipes are typically applied where temperatures reach up to 1100°F (593°C) (per ASTM B407 / Inco Alloys International technical bulletin). Incoloy 800H and 800HT are preferred where creep and rupture strength are required above this threshold. The alloy contains 30–35% Nickel (offering resistance to chloride-ion stress-corrosion cracking) and 19–23% Chromium (providing oxidation resistance). Grain size for 800H/800HT is controlled to ASTM No. 5 or coarser to maximise high-temperature creep strength.

Key Differences: Incoloy 800 vs 800H vs 800HT

The table below summarises the three key variants by UNS designation, carbon range, and primary engineering advantage, the most common comparison in material selection for high-temperature process equipment.

The critical differences across the series lie in carbon content and the Titanium + Aluminium additions. Incoloy 800H pipe contains a controlled carbon range of 0.05–0.10% and a defined grain size (ASTM No. 5 or coarser) to maximise creep strength. Incoloy 800HT additionally requires a combined Ti+Al content of 0.85–1.20%, guaranteeing maximum high-temperature structural integrity.

Grade UNS Designation Carbon Content Key Feature / Typical Application
Incoloy 800 N08800 0.10% max General corrosion resistance, good strength — Process piping, sheathing
Incoloy 800H N08810 0.05–0.10% Enhanced Creep Rupture Strength — Industrial furnaces, heat treating equipment
Incoloy 800HT N08811 0.06–0.10% Maximum High-Temp Strength (Ti+Al controlled) — Hydrogen reformers, petrochemical cracking

Alloy 800 Seamless Pipe vs Welded Pipe

Alloy 800 seamless pipe is produced through extrusion or rotary piercing, then cold worked and annealed. Seamless pipes are preferred in critical high-pressure and high-temperature applications such as superheater tubes, where the absence of a weld seam eliminates a potential stress concentration. Welded Incoloy 800H pipes (ERW/EFW) are cost-effective for large-diameter, lower-pressure applications. All welded pipes undergo rigorous non-destructive testing.

For superheater applications requiring zero-defect weld-seam integrity, see our full range of Incoloy 800 seamless pipe in SCH 10S through SCH XXS.

ASTM B407, ASTM B163 & ASME SB407 Specifications

Our manufacturing process conforms strictly to ASTM B407 (ASME SB407) for seamless pipes, ASTM B163 for seamless tubes, and ASTM B514 / ASTM B515 for welded pipes and tubes.

Specification ASTM B407, ASTM B514, ASTM B515, ASTM B163 / ASME SB407, ASME SB514, ASME SB515
Pipes & Tubes Size 1/8″ NB to 24″ NB
EFW Pipe Size 6″ NB to 48″ NB
Outside Diameter 6.00 mm OD up to 914.4 mm OD | Sizes up to 24″ NB available Ex-stock
Manufacturing Techniques Seamless / Welded / ERW / EFW / Fabricated / CDW / 100% X-Ray Welded
Schedule Thickness Range SCH 5, SCH 10, SCH 10S, SCH 40, SCH 40S, SCH 80, SCH 80S, SCH 160, SCH XS, SCH XXS
End Types Plain End, Beveled End, Threaded One End, TBE (Threaded Both Ends)
Delivery Condition Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
Value Added Services Cutting, Beveling, Polishing, Threading, Destructive & Non-Destructive Testing, Ultrasonic Testing
Inspection & Test Reports EN 10204 3.1, Mill Test Certificates, Chemical Reports, PMI Test Reports, Mechanical Reports, Third Party Inspection (TPI), NABL Approved Lab
Packing Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customer’s Request

Equivalent Grades (International Standards)

These alloys are specified under multiple international standards. DIN designations — DIN 1.4876, DIN 1.4958, DIN 1.4959 — are widely referenced in European projects alongside UNS and EN designations. 

Standard Incoloy 800 Incoloy 800H Incoloy 800HT
UNS N08800 N08810 N08811
Werkstoff Nr. 1.4876 1.4958 / 1.4876 1.4959 / 1.4876
EN X10NiCrAlTi32-20 X5NiCrAlTi31-20 X8NiCrAlTi32-21
JIS NCF 800 NCF 800H NCF 800HT
BS NA 15 NA 15(H) NA 15(HT)
GOST EP670 (XH32T) EP670 (XH32T) EP670 (XH32T)
AFNOR Z8NC32-21 Z8NC33-21 —

Chemical Composition (% Weight)

The composition table below reflects ASTM B407 / ASME SB407 requirements. The key differentiator between grades is carbon content and the combined Al+Ti requirement — unique to Incoloy 800HT (UNS N08811).

Element Incoloy 800 Incoloy 800H Incoloy 800HT
Nickel (Ni) 30.0–35.0 30.0–35.0 30.0–35.0
Chromium (Cr) 19.0–23.0 19.0–23.0 19.0–23.0
Iron (Fe) 39.5 min 39.5 min 39.5 min
Carbon (C) 0.10 max 0.05–0.10 0.06–0.10
Manganese (Mn) 1.50 max 1.50 max 1.50 max
Silicon (Si) 1.00 max 1.00 max 1.00 max
Sulfur (S) 0.015 max 0.015 max 0.015 max
Copper (Cu) 0.75 max 0.75 max 0.75 max
Aluminum (Al) 0.15–0.60 0.15–0.60 0.15–0.60
Titanium (Ti) 0.15–0.60 0.15–0.60 0.15–0.60
Al + Ti — — 0.85–1.20

Mechanical Properties

Property Value (Room Temperature)  
Density 7.94 g/cm³  
Melting Point 1357–1385 °C  
Tensile Strength (min) 75 ksi (520 MPa)  
Yield Strength (0.2% Offset) 30 ksi (205 MPa)  
Elongation (min) 30%  

 For elevated-temperature performance differences between the three grades, see the Creep Rupture Strength Data table below.

Creep Rupture Strength Data of 800 vs 800H vs 800HT

For engineers specifying Incoloy 800H vs 800HT, creep rupture strength at elevated temperatures is often the decisive factor. The table below shows approximate 100,000-hour rupture stress values. Incoloy 800HT (UNS N08811, DIN 1.4959) consistently delivers the highest rupture strength due to its controlled Ti+Al content (0.85–1.20%) and coarse grain size (ASTM No. 5 or coarser).

Temperature Incoloy 800 (UNS N08800) Incoloy 800H (UNS N08810) Incoloy 800HT (UNS N08811)
650°C (1200°F) ~65 MPa ~80 MPa ~90 MPa
750°C (1382°F) ~25 MPa ~45 MPa ~55 MPa
850°C (1562°F) ~8 MPa ~18 MPa ~25 MPa
900°C (1652°F) ~4 MPa ~10 MPa ~15 MPa

Reference values based on published creep-rupture data for ASTM B407 alloys. For design-critical applications, consult the applicable ASME Boiler & Pressure Vessel Code case data or the material manufacturer’s certified test reports. 

Manufacturing Range & Dimensional Standards

Incoloy 800 Seamless Pipes

  •       Size Range: 1/8″ NB to 24″ NB
  •       Standards: ASTM B407, ASTM B163, ASME SB407
  •       Wall Thickness: SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS
  •       Grain Size: ASTM No. 5 or coarser for 800H/800HT grades

Incoloy 800H Welded / ERW Tubes

  •       Size Range: 6″ NB to 100″ NB (EFW/Fabricated)
  •       Standards: ASTM B514, ASTM B515
  •       Finish: Annealed & Pickled, Bright Annealed, Polished

Types of Incoloy 800 / 800H / 800HT Pipes & Tubes

The table below covers the full dimensional range available, from standard round seamless pipe to instrumentation tubing, U-bend tubes, and pancake coils all produced to ASTM B407 or ASTM B514 as applicable. 

Kalpataru Piping offers a comprehensive range of pipe and tube configurations. In addition to standard round pipes, we supply Incoloy 800 capillary tube, Incoloy 800H instrumentation tubing, U-bend tubes, coiled tubes, pancake coils, hydraulic tubes, oval tubes, hexagonal tubes, and square and rectangular pipes.

Product Description Wall Thickness (mm) Outside Diameter (mm)  
Incoloy 800 Seamless Round Pipe/Tube 0.5 to 30 6 to 630  
Incoloy 800H Seamless Square Pipe/Tube 0.5 to 30 12.7×12.7 to 300×300  
Incoloy 800 Seamless Rectangular Pipe/Tube 0.5 to 30 10×20 to 100×200  
Incoloy 800HT Welded/ERW Pipe 1.0 to 25 6 to 1000  
Incoloy 800 Capillary Tube 0.1 to 2.0 0.5 to 6  
Incoloy 800H Instrumentation Tubing 0.5 to 2.5 3 to 25  
Incoloy 800HT U-Bend Tube 0.7 to 4.0 6 to 38  
Incoloy 800 Coiled Tube 0.5 to 3.0 3 to 19  
Incoloy 800HT Pancake Coil 0.5 to 3.0 3 to 25  
Incoloy 800 Hydraulic Tube 1.0 to 6.0 6 to 50.8  
Incoloy 800 Oval Tube 0.5 to 3.0 Custom  
Incoloy 800 Hexagonal Tube 1.0 to 5.0 Custom  
Incoloy 800 Seamless Ornamental Tubes 0.5 to 2.0 12.7 to 76.2  
Incoloy 800H Electropolished Pipes/Tubes 0.5 to 30 12.7 to 250  
Incoloy 800 Heat Exchanger Tubes 0.7 to 3.0 6 to 50.8  

Incoloy 800H instrumentation and small-bore tubing is available from 1mm OD in wall thicknesses from 0.2mm, supplied to ASTM B163 and cold-drawn to close tolerance. Suitable for thermowell, sampling, and process instrument line applications. 

Incoloy 800 / 800H / 800HT Pipe Weight Chart (Common Sizes)

Use our Calculate Incoloy 800 Pipe Weight tool for precise calculations. Theoretical weights for common sizes are shown below.

NPS (In.) DN (mm) OD (mm) Schedule Wall Thk (mm) Weight (Kg/m)
1/2″ 15 21.3 SCH 40 2.77 1.27
3/4″ 20 26.7 SCH 40 2.87 1.69
1″ 25 33.4 SCH 40 3.38 2.50
1 1/2″ 40 48.3 SCH 40 3.68 4.05
2″ 50 60.3 SCH 40 3.91 5.44
2 1/2″ 65 73.0 SCH 40 5.16 8.63
3″ 80 88.9 SCH 40 5.49 11.29
4″ 100 114.3 SCH 40 6.02 16.07
6″ 150 168.3 SCH 40 7.11 28.26
8″ 200 219.1 SCH 40 8.18 42.56
10″ 250 273.0 SCH 40 9.27 60.31
12″ 300 323.8 SCH 40 9.53 73.86
14″ 350 355.6 SCH 40 9.53 81.33
16″ 400 406.4 SCH 40 9.53 93.27
18″ 450 457.0 SCH 40 9.53 105.16
20″ 500 508.0 SCH 40 9.53 117.48
24″ 600 610.0 SCH 40 9.53 141.30

 Note: Weights are theoretical (±10% tolerance). Weight data for heavier schedules (SCH 80, SCH 160, SCH XXS) is available on request — critical for pressure design calculations under ASME B31.3.

Incoloy 800 vs Incoloy 825: Which Alloy Suits Your Application?

Incoloy 800 vs Incoloy 825 is the most searched Incoloy grade comparison among procurement engineers. Both are nickel-iron-chromium alloys, but they excel in fundamentally different environments. Incoloy 800/800H/800HT is the go-to choice for high-temperature gas-phase environments (furnaces, reformers, superheaters). Incoloy 825 delivers superior resistance in aggressive aqueous and acidic environments (sulphuric acid, phosphoric acid, seawater).

Property Incoloy 800/800H/800HT Incoloy 825  
UNS No. N08800 / N08810 / N08811 N08825  
Ni Content 30–35% 38–46%  
Key Alloying Cr, Fe, Ti, Al Cr, Fe, Mo, Cu, Ti  
Max Temp (Continuous) 1100°C (800HT) ~450°C  
High-Temp Strength Excellent (especially 800HT) Moderate  
Aqueous Corrosion Good Excellent (H2SO4, H3PO4)  
Chloride SCC Resistance Good Very Good  
ASTM Standard (Pipes) B407, B514, B515 B423, B704, B705  
Typical Use Furnaces, reformers, superheaters Oil & gas, chemical processing, pollution control  
Price Indicator Moderate–High Higher  

Price indicators reflect relative alloy cost based on nickel content and alloying additions intended as directional guidance for budget-stage material selection, not as a quotation.

For a detailed side-by-side selection guide, see our Incoloy 825 Pipes & Tubes page. For matching components, visit Incoloy 800 Flanges and Incoloy 800 Round Bars & Wires. 

Applications & Industries Served

  • Chemical & Petrochemical Processing
    Incoloy 800 tube is widely used in ethylene furnace convection tubing, quench boilers, and hydrocarbon cracking furnaces. The alloy’s carburization resistance makes it indispensable where carbon absorption is a constant threat. See our matching Incoloy 800 Buttweld Fittings.
  • Power Generation (Nuclear & Thermal)
    Applied extensively as superheater and reheater tubing. Steam generator tubing in nuclear power plants benefits from the alloy’s resistance to chloride-ion stress-corrosion cracking.
  • Heat Exchanger Applications
    Incoloy 800 heat exchanger tubes are the preferred choice in demanding shell-and-tube heat exchangers, condensers, and evaporators operating at high temperatures. See our full range of Incoloy 800 Heat Exchanger Tubes.
  • Heat Treatment Furnaces
    Radiant tubes, muffles, retorts, and furnace fixtures rely on alloy 800 pipe to maintain structural integrity during repeated thermal cycling. Incoloy 800HT (UNS N08811) is specifically designed for this continuous high-temperature duty.
  • Hydrogen Reformers & Petrochemical Cracking
    Incoloy 800HT seamless pipe (ASTM B407, DIN 1.4959) is the industry standard for hydrogen reformer outlet pigtails and transfer line piping in steam methane reforming units due to its exceptional creep-rupture life. See our full Incoloy 800HT seamless pipe ASTM B407 category.

Quality Assurance & Testing

Every Incoloy 800 pipe we supply undergoes a comprehensive test regime conforming to ASTM B407 and ASME SB407:

  • Chemical Analysis: PMI (Positive Material Identification) to verify Ni/Cr content.
  • Mechanical Testing: Tensile, Yield, and Elongation tests.
  • NDT: Ultrasonic Testing (UT) and Hydrostatic Testing.
  • Grain Size Analysis: Specific checks for 800H/800HT — ASTM No. 5 or coarser required.
  • Certificates: EN 10204 3.1 Mill Test Certificates (MTC). Third-party inspection (TPI) available.

Also see: Incoloy 800 Plates & Sheets | Incoloy 800 Fasteners. 

Export Destinations & Supply Chain

As a leading Incoloy 800H pipe supplier India, Kalpataru Piping exports to over 40 countries. Key export destinations include:

  • Middle East: Saudi Arabia (Riyadh, Jubail), UAE (Dubai, Abu Dhabi), Qatar, Kuwait
  • Asia: Singapore, Malaysia, Thailand, Indonesia
  • Europe & Americas: Germany, UK, USA, Canada, Brazil, South Africa, Australia

Specialized packaging (wooden crates, plastic end caps) ensures safe transit for all destinations.

Frequently Asked Questions

What is the price of Incoloy 800H pipe per kg?

Incoloy 800H price fluctuates with the nickel market, OD/wall thickness, and quantity. The indicative FOB price is US $800–$5,800/Tonne. Contact our sales team for a current quote.

What is the difference between Inconel and Incoloy 800?

Inconel alloys (e.g. 625, 718) are primarily nickel-based (>50% Ni) with superior strength. Incoloy 800 (UNS N08800) is an iron-based alloy (~40% Fe, 30–35% Ni) better suited for high-temperature oxidation and carburization resistance at a lower alloy cost.

Is Incoloy 800 magnetic?

Incoloy 800 is essentially non-magnetic in the solution-annealed condition. Its iron content (39.5% min) and austenitic structure mean cold working can induce a minor degree of ferromagnetism. For applications requiring confirmed non-magnetic certification, specify annealed condition with a magnetic permeability test.

What is the temperature rating for 800HT pipe?

Incoloy 800HT pipe is rated for continuous service up to approximately 1100°C (2012°F). Its controlled Ti+Al chemistry (0.85–1.20%) and coarse grain structure (ASTM No. 5 or coarser) ensure superior creep-rupture life at these extreme temperatures.

What additional standards cover Incoloy 800 tubing?

In addition to ASTM B407 and ASME SB407, seamless tubes are covered by ASTM B163. This standard is frequently specified for Incoloy 800HT superheater tubes in power generation projects.

What is ASTM B163 and how does it apply to Incoloy 800HT tubing?

ASTM B163 covers seamless nickel and nickel-alloy condenser and heat-exchanger tubes. For Incoloy 800HT (UNS N08811), ASTM B163 is frequently specified in power generation projects — particularly for superheater and reheater tubing where both ASME SB163 and ASTM B407 compliance may be required.

Related Products

Incoloy 800/800H/800HT Flanges  |  Incoloy 800/800H/800HT Round Bars & Wires  |  Incoloy 800/800H/800HT Plates & Sheets  |  Incoloy 825 Pipes & Tubes  |  Incoloy 800 Fasteners

Ready to Order?

Get high-grade Incoloy 800/800H/800HT Pipes directly from the manufacturer. We offer Ex-Stock delivery for urgent shutdowns.

Contact Us for Ex-Stock Delivery

Also check: Incoloy 800 Fasteners | Plates & Sheetsb>

Related Products

Cities We deliver

Bhopal, Lahore, Milan, Hyderabad, Pune, Vadodara, Pimpri-Chinchwad, Aberdeen, Howrah, Jeddah, Riyadh, Bogota, Petaling Jaya, Dallas, Lagos, Nagpur, Houston, Brisbane, Busan, Karachi, Coimbatore, Seoul, Caracas, Atyrau, Perth, Haryana, Bengaluru, Jaipur, Al Jubail, Kuwait City, Al Khobar, Sydney, Ranchi, Chiyoda, Noida, Chandigarh, Secunderabad, Ahvaz, Port-of-Spain, Singapore, Gurgaon, Rajkot, Rio de Janeiro, Abu Dhabi, Hong Kong, Surat, Sharjah, Hanoi, London, Muscat, Jakarta, Navi Mumbai, Istanbul, Kolkata, Cairo, Mumbai, Santiago, Montreal, Faridabad, Vung Tau, Bangkok, Ankara, Ahmedabad, Granada, Melbourne, Tehran, Visakhapatnam, New Delhi, Los Angeles, Ho Chi Minh City, Edmonton, La Victoria, Baroda, Thane, Nashik, Kuala Lumpur, Moscow, Ernakulam, Courbevoie, Calgary, Geoje-si, Indore, New York, Mexico City, Gimhae-si, Ludhiana, Kanpur, Ulsan, Thiruvananthapuram, Manama, Doha, Chennai, Madrid, Jamshedpur, Algiers, Dammam

Countries We Deliver

Iran, Venezuela, Saudi Arabia, Slovakia, Romania, Zimbabwe, Spain, Kazakhstan, Canada, Nigeria, Bulgaria, Afghanistan, Thailand, Bangladesh, Poland, United Kingdom, Bahrain, Jordan, Lithuania, Malaysia, France, Nigeria, Japan, Oman, Lebanon, Germany, Croatia, Australia, Puerto Rico, South Korea, Hungary, United States, Bhutan, Mexico, Mexico, Yemen, Singapore, New Zealand, Ecuador, Gabon, Qatar, Denmark, Iran, Netherlands, Norway, Sri Lanka, Belgium, Libya, Kuwait, Pakistan, Gambia, Sweden, Azerbaijan, Argentina, Chile, Ghana, United Arab Emirates, Finland, Nepal, Trinidad andamp; Tobago,Tunisia, Kenya, Peru, Austria, Russia, Ukraine, Italy, Belarus, Bolivia, Serbia, Poland, Mongolia, Turkey, Czech Republic, South Africa, Angola, India, Vietnam, Indonesia, Tibet, Ireland, Costa Rica, Greece, Colombia, Namibia, Iraq, Estonia, Israel, Macau, Philippines, Brazil, Switzerland, Algeria, Morocco, Chile, Portugal, Egypt, Taiwan, China, Hong Kong.

    Enquire Now

    Fill the below form and get in touch with us, we’ll call you back.

    Fill the Captcha:

    Our Products

    Hot Products

    Enquire Now
    close slider

      Enquire Now

      Fill the below form and get in touch with us, we’ll call you back.

      Fill the Captcha:
      WhatsApp chat