Incoloy 800/800H/800HT Pipes Manufacturer

Midland Alloys Inc. is a trusted Manufacturer and Supplier of Incoloy 800/800H/800HT Pipes, offering precision-engineered piping solutions to meet high-temperature and corrosive environment requirements. Designed for thermal stability and metallurgical integrity, these nickel-iron-chromium alloy pipes are available in three grades. Incoloy 800 for general use, 800H for improved creep strength, and 800HT with optimized carbon and aluminum/titanium content for enhanced performance. These pipes are manufactured as per ASTM B407/B514, ASME SB407/SB514, and DIN/EN standards, with a balanced chemical composition of nickel (30–35%), chromium (19–23%), and iron as the base, along with controlled additions of aluminum and titanium. Our inventory includes seamless, welded, ERW, and fabricated pipes along with fittings like elbows, tees, reducers, and stub ends. ISO-certified and globally exported, Midland Alloys Inc. ensures consistent availability, fast delivery, and technical compliance across all orders.

Benefits of Incoloy 800/800H/800HT Pipes

Incoloy 800-series pipes are engineered to perform reliably in high-temperature and aggressive chemical environments, where dimensional stability and oxidation resistance are essential. Specific mechanical and thermal properties catered to demanding process conditions are provided by each of the 800, 800H and 800HT types.

High-Temperature Stability and Flexibility: Maintains structural integrity, when subjected to prolonged exposure to temperatures of up to 1100°F (800) and 1500°F (800H/800HT) with no distortion or degradation.
Corrosion Resistance: Its chromium and nickel equilibrium, resists oxidation, carburization and sulfidation in oxidizing and acidic conditions.
Creep Resistance: 800H and 800HT grades provide enhanced resistance to time-dependent deformation under high mechanical stress.
Weldability and Fabricability: Appropriate for a number of joining techniques such as TIG, MIG, and SAW; easy formability ensures ease of manufacturing and making site adjustments.
Resistance to Chloride Stress-Corrosion Cracking: Exhibits superior performance in chloride-containing environments compared to stainless steels and copper alloys.

Difference Between Incoloy 800/800H/800HT Pipes and Copper Pipes

Incoloy 800/800H/800HT pipes and copper pipes serve different industrial needs due to their distinct material properties. Incoloy, a nickel-iron-chromium alloy, is designed to provide high-temperature strength, oxidation resistance, and structural stability and is well suited for use in furnaces, heat exchangers, and severe chemical environments when temperatures are above 1000°F. These pipes have very good tensile strength and creep resistance, enabling them to resist long-term stress without deforming. In contrast, copper tubing, usually constructed of pure copper or copper alloys such as brass, is valued for its heat and electricity conductance, antimicrobial qualities, which qualify it for plumbing, heating, ventilation, and air conditioning applications, and low-pressure services. Copper, though, softens at over 400°F and does not possess. Incoloy’s thermal stability and corrosion resistance in sulfuric, ammonia, or chloride environments cannot be used for demanding industrial applications.

Specification of Incoloy 800/800H/800HT Pipes

Types of Incoloy 800/800H/800HT Pipes

Manufacturing Types

Seamless Pipe

Weld-free, perfect for even strength and sizing precision.
Welded Pipe

Welded from flat-rolled steel, widely used where economy and large sizes are required.
ERW Pipe

Electric Resistance Welded (ERW) pipes provide neat, high quality weld seams and are ideal for medium-pressure applications.
EFW Pipe

Electric Fusion Welded (EFW) pipes are welded by fusion welding, usually applied in larger diameters and high-demand processes.

Pipe Forms

Round Pipe

The most common shape for fluid and gas transport.
Square Pipe

Used in architectural and structural applications requiring angular profiles.
Rectangular Pipe

Provides greater strength in load-bearing regions and flat structures.
Hydraulic Pipe

Designed to provide precise dimensional control for fluid systems under pressure.

Contact Midland Alloys Inc. for Your Incoloy 800/800H/800HT Pipes Needs

Contact us today to discuss how Incoloy 800/800H/800HT Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

Technical Details & Delivery Condition

Incoloy 800/800H/800HT Pipes Chemical Composition

Grade		C	Mn	Si	Fe	S	Cr	Al-Ti	Ni
Incoloy 800 Pipe	min.	–	–	–	39.5	–	19.0	0.15	30.0
Incoloy 800 Pipe	max.	0.1	1.5	1.0	–	0.015	23.0	0.60	35.0
Incoloy 800H Pipe	min.	0.05	–	–	39.5	–	19.0	0.15	30.0
Incoloy 800H Pipe	max.	0.1	1.5	1.0	–	0.015	23.0	0.60	35.0
Incoloy 800HT Pipe	min.	0.06	–	–	39.5	–	19.0	0.85 / 0.25	30.0
Incoloy 800HT Pipe	max.	0.1	1.5	1.0	–	0.015	23.0	1.20 / 0.60	35.0

Incoloy 800/800H/800HT Pipes Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness Rockwell B (HR B) max	Hardness Brinell (HB) max
Incoloy 800-H-HT Pipe	Psi – 75,000 , MPa – 520	Psi – 30,000 , MPa – 205	30	–	–

Incoloy 800/800H/800HT Pipes Equivalent Grade

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	GOST	AFNOR	EN	OR
Incoloy 800 Pipe	1.4876	N08800	NCF 800	NA 15	ЭИ670	Z8NC32-21	X10NiCrAlTi32-20	XH32T
Incoloy 800H Pipe	1.4958 / 1.4876	N08810	NCF 800H	NA 15(H)	ЭИ670	Z8NC33-21	X5NiCrAlTi31-20	XH32T
Incoloy 800HT Pipe	1.4859 / 1.4876	N08811	NCF 800HT	NA 15(HT)	ЭИ670	–	X8NiCrAlTi32-21	XH32T

Incoloy Pipes Grades We Offer

Incoloy Pipes

Incoloy 800/800H/800HT Pipes

Incoloy 825 Pipes

Pipe Dimensions

Thickness Chart

Pipe Dimensions

Thickness Chart

Manufacturing Process of Incoloy 800/800H/800HT Pipes

Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping

Applications of Incoloy 800/800H/800HT Pipes

Incoloy 800/800H/800HT pipes are widely used in high-temperature industrial systems such as heat exchangers, furnace components, petrochemical processing units, and power plant superheaters. Their ability to resist oxidation and maintain mechanical properties under elevated temperatures makes them suitable for steam reforming, ethylene production, and hydrocarbon cracking units. These pipes also serve well in chemical plants, nuclear power facilities, and marine engineering systems where resistance to thermal fatigue and environmental corrosion is critical.

Offshore Industry

Nuclear Industries

Refineries

Ship Building

Aerospace

Pharmaceutical

Why Midland Alloys Inc. for Incoloy 800/800H/800HT Pipes

Midland Alloys Inc. is renowned for technical accuracy, international exportability, and assured availability of certified Incoloy 800/800H/800HT Pipes. Backed by in-house quality inspection, ISO certification and strict adherence to ASTM/ASME/DIN specifications. We ensure secure piping solutions customized for demanding industrial applications. Our seamless and welded pipes, fittings, and customization support ensures that each project meets demanding standards requirements delivered, with efficiency and technical integrity.

Frequently Asked Questions About Incoloy 800/800H/800HT Pipes

Is INCOLOY superior to copper?

Incoloy has superior thermal stability, creep life and corrosion properties in demanding industrial conditions, it is a better choice than copper for corrosive and high-temperature environments.

What is Incoloy material?

Incoloy is a group of nickel-iron-chromium alloys designed for chemical-resistant and high-temperature uses. The 800-series has superior strength, oxidation resistance and metallurgical stability.

What is the heat treatment for INCOLOY 800H?

Incoloy 800H is solution annealed at a temperature of 1975°F to 2050°F with rapid cooling maintained to preserve grain structure, and enhance high-temperature creep resistance.

Products Categories

ISO Certificate

Alloy	Product form	Dimension
INCOLOY 800 (32 Ni/21 Cr)	Pipe; cold drawn, pickled, annealed	13.72 x 2.24 mm (¼”nb sch40s)
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; seamless, cold finished, solution annealed	26.67 x 3.91 mm (¾”nb sch80s)
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; cold drawn, pickled, solution annealed	33.40 x 3.38 mm (1″nb sch40s)
ALLOY 800HT (32 Ni/21 Cr)	Pipe; seamless, cold finished, annealed	33.40 x 4.55 mm (1″nb sch80s)
ALLOY 800HT (32 Ni/21 Cr)	Pipe; seamless, cold finished, annealed	48.26 x 3.68 mm (1½”nb Sch40s)
INCOLOY 800 (32 Ni/21 Cr)	Pipe; cold drawn, pickled, annealed	50.8 x 2.64 mm
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; cold drawn, pickled, solution annealed	60.33 x 3.91 mm (2″nb sch40s)
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; cold drawn, pickled, solution annealed	60.33 x 2.77 mm (2″nb Sch10s)
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; cold drawn, pickled, solution annealed	60.33 x 3.91 mm (2″nb sch40s)
INCOLOY 800HT (32 Ni/21 Cr)	Pipe; cold drawn, pickled, solution annealed	88.90 x 5.49 mm (3″nb sch40s)
ALLOY 800HT (32 Ni/21 Cr)	Pipe; seamless, hot finished, pickled, passivated	114.3 x 6.02 mm (4″nb sch40s)

Nominal	O.D. Inches	10s	10	40s & Std	40	80s & E.H.	80	160
1/8	.405	.049	.049	.068	.068	.095	.095
1/4	.540	.065	.065	.088	.088	.119	.119
3/8	.675	.065	.065	.091	.091	.126	.126
1/2	.840	.083	.083	.109	.109	.147	.147	.187
3/4	1.050	.083	.083	.113	.113	.154	.154	.218
1	1.315	.109	.109	.133	.133	.179	.179	.250
1 1/4	1.660	.109	.109	.140	.140	.191	.191	.250
1 1/2	1.900	.109	.109	.145	.145	.200	.200	.281
2	2.375	.109	.109	.154	.154	.218	.218	.343
2 1/2	2.875	.120	.120	.203	.203	.276	.276	.375
3	3.500	.120	.120	.216	.216	.300	.300	.437
3 1/2	4.000	.120	.120	.226	.226	.318	.318
4	4.500	.120	.120	.237	.237	.337	.337	.531
4 1/2	5.000			.247		.355
5	5.563	.134	.134	.258	.258	.375	.375	.625
6	6.625	.134	.134	.280	.280	.432	.432	.718
7	7.625			.301		.500
8	8.625	.148	.148	.322	.322	.500	.500	.906
9	9.625			.342		.500
10	10.750	.165	.165	.365	.365	.500	.593	1.125
11	11.750			.375		.500
12	12.750	.180	.180	.375	.406	.500	.687	1.312
14	14.000	.188	.250	.375	.437	.500	.750	1.406
16	16.000	.188	.250	.375	.500	.500	.843	1.593
18	18.000	.188	.250	.375	.562	.500	.937	1.781