Incoloy 800 Tubes | Incoloy 800 Seamless Tube Supplier

Solitaire Overseas is a highly acclaimed supplier and manufacturer of a qualitative range of incoloy 800h, 800h alloy, incoloy 800ht, and inconel 800h seamless tubes. The company has established an unparalleled position through relentless efforts to meet buyers' needs by offering premium quality tubes. These products are designed and fabricated based on clients' specific requirements and are available in various standards, specifications, and grades to satisfy all demands. Buyers are provided with these high-quality products at reasonable rates.

Incoloy 800, 800h, and 800ht tubes are dual-certifiable alloy tubes based on nickel-chromium-iron alloys, resisting oxidation, carburization, and high-temperature corrosion. The chemical composition of these two alloys is identical to alloy 800, with the exception of a higher carbon content. Alloy 800ht includes an addition of 1.0% titanium and aluminum. Alloy 800h exhibits excellent rupture properties at temperatures above 600°C and remains ductile during long-term usage. This 800h material resists oxidizing, reducing, and nitriding environments and remains stable during prolonged high-temperature service. Both alloy 800h and 800ht are easily welded and processed through standard shop fabrication techniques. Incoloy 800 is a nickel and chromium alloy known for its excellent resistance and high strength.

Incoloy 800/800H/800HT Tubes

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Incoloy 800/800H/800HT Tubing

ASTM B407 Alloy 800H Seamless Tubing, Alloy 800HT ERW Tubing, DIN 1.4876 Tubes, Incoloy Alloy N08811 Seamless Tubes, 800H Incoloy® Round Tubes, WNR 1.4958 Tubing, Alloy 800HT Tubes, Incoloy 1.4859 Tubing, Nickel Alloy 800 Tubing Supplier in Mumbai, India.

During the time of manufacturing of Incoloy Alloy 800 800H 800HT Welded Tubes, use of high quality of alloy is preferred to add greater strength to the product. Also, the use of modern tools and sophisticated technology is given high importance to assure better fabrication. By keeping in mind national as well as international product quality standards the manufacturing of this grade tube is done to assure better production of tubes. Furthermore, the professional expert's team and quality control team is appointed looking at several stages of the production process to let the product maintain its quality.

There are many essential testing that takes place in the industry that is for quality check. The tests are hardness test, PMI/IGC test, mechanical/chemical test, flattening/flaring test, macro/micro test, pitting resistant test etc. The documents are also provided to the buyers including heat treatment chart, QAP, packaging list, guarantee letter, raw material test report, material traceability report etc.

Specification

Specifications

ASTM B407, B515 / ASME SB407, SB515

Dimensions

ASTM, ASME and API

Tubes Size

6 mm OD x 0.7 mm to 50.8 mm OD x 3 mm thk.

Schedule

SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Type :

Seamless / ERW / Welded / Fabricated / LSAW Tubes

Form :

Round, Square, Rectangular, Hydraulic Etc.

Length :

Single Random, Double Random & Cut Length.

End

Plain End, Beveled End, Treaded

Incoloy 800/800H/800HT Tubes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN
Incoloy 800	1.4876	N08800	NCF 800	NA 15	ЭИ670	Z8NC32-21	X10NiCrAlTi32-20
Incoloy 800H	1.4958 / 1.4876	N08810	NCF 800H	NA 15(H)	ЭИ670	Z8NC33-21	X5NiCrAlTi31-20
Incoloy 800HT	1.4859 / 1.4876	N08811	NCF 800HT	NA 15(HT)	ЭИ670	–	X8NiCrAlTi32-21

Alloy 800/800H/800HT Tubes Chemical Composition

Element	Alloy 800	Alloy 800H	Alloy 800HT
C	0.10 max	0.05 – 0.10	0.06 – 0.10
Mn	1.50 max	1.50 max	1.50 max
Si	1.00 max	1.00 max	1.00 max
S	0.015 max	0.015 max	0.015 max
Cu	0.75 max	0.75 max	0.75 max
Fe	39.50 min	39.50 min	39.50 min
Ni	30.00 – 35.00	30.00 – 35.00	30.00 – 35.00
Cr	19.00 – 23.00	19.00 – 23.00	19.00 – 23.00

What Is Incoloy 800/800H/800HT Tubes?

Incoloy 800, 800H, and 800HT Tubes are high-performance nickel-iron-chromium alloys engineered for exceptional strength, corrosion resistance, and thermal stability in extreme environments. These tubes are primarily used in applications involving elevated temperatures and aggressive chemical exposure, such as heat exchangers, petrochemical processing, power generation, and nuclear engineering.
Incoloy 800 Tubes are the base grade in this alloy series, known for their excellent resistance to oxidation and carburization in high-temperature service. Incoloy 800H Tubes are a modified version with higher carbon content and controlled grain size to enhance creep resistance. Incoloy 800HT Tubes take performance further by maintaining stricter controls on aluminum and titanium content, improving resistance to stress rupture and thermal fatigue.
Together, these three variants ensure versatility across demanding thermal conditions, offering engineers and fabricators flexibility in selecting the right material based on operating pressures, temperatures, and long-term durability. Their metallurgical stability, superior weldability, and high strength make Incoloy 800/800H/800HT Tubes a preferred choice for mission-critical piping systems across industries worldwide.

Incoloy 800 vs 800H vs 800HT Tubes – Comparison Table

Incoloy 800, 800H, and 800HT Tubes are part of the same alloy family but are engineered with slight compositional and structural differences to suit varying levels of temperature, stress, and corrosion resistance. All three variants are primarily used in heat-resistant and high-temperature applications, but their mechanical and metallurgical properties vary based on specific operational needs.
The table below provides a clear comparison between Incoloy 800, 800H, and 800HT Tubes:

Property	Incoloy 800	Incoloy 800H	Incoloy 800HT
UNS Number	N08800	N08810	N08811
Carbon Content	≤ 0.10%	0.05% – 0.10%	0.06% – 0.10%
Grain Size Control	Not specified	Controlled for improved creep strength	Controlled for maximum creep-rupture strength
Aluminum + Titanium Content	0.15% – 0.60% (combined)	Same as 800	0.85% – 1.20% (combined)
Maximum Service Temperature	Up to 1100°F (593°C)	Up to 1500°F (816°C)	Up to 1650°F (899°C)
Creep & Rupture Resistance	Good	Improved	Excellent
Applications	Heat exchangers, process piping	High-temperature reformers, heaters	Superheaters, industrial furnaces
ASTM Specification	B407 / B163 / B515	B407 / B163 / B515	B407 / B163 / B515

Summary:

Incoloy 800 is ideal for general high-temperature resistance.
Incoloy 800H offers improved creep strength due to higher carbon and controlled grain size.
Incoloy 800HT is optimized for maximum performance in extreme heat with tighter control over Al+Ti.

Whether you're designing for structural stability or thermal endurance, selecting the right variant ensures long-lasting performance and safety in critical systems.

Incoloy Alloy 800/800H/800HT Tubes Mechanical & Physical Properties

Element	Incoloy Alloy 800/800H/800HT
Density	7.94 g/cm3
Melting Point	1385 °C (2525 °F)
Tensile Strength	Psi – 75,000 , MPa – 520
Yield Strength (0.2%Offset)	Psi – 30,000 , MPa – 205
Elongation	30 %

Related Products Of Inconel

Inconel 601 Pipes	Inconel 625 Pipes	Inconel 690 Pipes	Inconel 600 Pipes	Inconel 825 Pipes
Inconel 600 Tubes	Inconel 601 Tubes	Inconel 625 Tubes	Inconel 690 Tubes	Incoloy 800/800H/800HT Pipes
Incoloy 825 Tubes	Inconel Fittings	Inconel Flanges	Inconel 625 Flanges	Inconel 601 Flanges
Inconel 600 Flanges	Inconel 600 Fittings	Inconel 601 Fittings	Inconel 625 Fittings	Inconel 718 Fittings
Inconel 825 Flanges	Inconel 800 Flanges	Inconel 718 Flanges	Inconel 718 Tubes	Inconel Round Bars
Inconel 718 Pipes	Inconel 800 Fittings	Inconel 825 Fittings	Inconel 601 Tubes	Inconel Heat Exchanger Condenser Tubes
Inconel 600 Heat Exchanger Condenser Tubes	Inconel 601 Heat Exchanger Condenser Tubes	Inconel 625 Heat Exchanger Condenser Tubes	Inconel 690 Heat Exchanger Condenser Tubes

800/800H/800HT Incoloy Tube Application

Incoloy Alloy 800 Tubes in various Application Industries

Food Processing Industry

Fabrication Industry

Oil and Gas Industry

Chemical Industry

Plumbing

General Purpose Applications

Heating

Water Supply Systems

Power Plant

Paper & Pulp Industry

Why Choose Solitaire Overseas For Incoloy 800 Tubes

Solitaire Overseas stands as a globally trusted manufacturer and supplier of Incoloy 800, 800H, and 800HT Tubes, offering unmatched quality, consistency, and reliability. With years of metallurgical expertise and a deep understanding of high-temperature alloy tubing, we deliver products that meet the most demanding industrial standards — including ASTM B407, B163, and B515 — for applications in heat exchangers, chemical processing, and power generation.

Our Incoloy 800 series tubes are precision-engineered to meet your exact specifications in terms of diameter, wall thickness, and tolerances. Each tube undergoes rigorous quality testing — including hydrostatic, PMI, and ultrasonic inspections — backed by certifications such as EN 10204 3.1/3.2. What sets Solitaire Overseas apart is not just our ability to deliver globally but our commitment to technical excellence, quick turnaround times, custom packaging solutions, and transparent documentation. Choose us for consistent supply, export-grade finish, and technical support every step of the way.

FAQ For Inconel 800 Tubes / Inconel 800H Tubes / Inconel 800HT Tubes

What are the key applications of Inconel 800 series tubes?

Inconel 800, 800H, and 800HT tubes are used in high-temperature and corrosive environments like heat exchangers, petrochemical furnaces, power plants, nuclear steam generators, and chemical processing systems due to their excellent oxidation and carburization resistance.

What is the main difference between Inconel 800, 800H, and 800HT tubes?

The key differences lie in carbon content and stress rupture properties. Inconel 800H has higher carbon (0.05–0.10%) and improved high-temperature strength. 800HT features tighter controls on aluminum and titanium (0.85–1.20%) for enhanced creep and rupture resistance.

Are Inconel 800 tubes suitable for high-temperature environments?

Yes, Inconel 800 tubes are ideal for high-temperature environments. They maintain strength and resist oxidation, scaling, and carburization up to 1100°F (593°C), making them suitable for heat exchangers, furnaces, and superheaters in demanding industrial systems.

What ASTM standards apply to Inconel 800H and 800HT tubes?

Inconel 800H and 800HT tubes conform to ASTM B407 for seamless tubes and ASTM B514 for welded versions. These standards specify chemical composition, mechanical properties, and testing requirements to ensure high performance in critical thermal applications.

Can Inconel 800HT tubes be welded, and what methods are recommended?

Yes, Inconel 800HT tubes can be welded using standard welding methods like TIG, MIG, or resistance welding. It's important to use matching filler metals and controlled heat input to maintain corrosion resistance and prevent grain growth in heat-affected zones.

How does the chemical composition vary across Inconel 800, 800H, and 800HT tubes?

All three alloys have similar base elements: 30–35% nickel, 19–23% chromium, and iron as the balance. 800H includes higher carbon for creep strength, while 800HT adds precise aluminum and titanium (0.85–1.20%) for superior high-temperature stability and strength.