Incoloy 800/800H/800HT Tubes Manufacturer
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Midland Alloys Inc. is a trusted Manufacturer and Supplier of Incoloy 800/800H/800HT Tubes, offering a wide range of high-temperature nickel-iron-chromium alloy tubing solutions for industrial use. Incoloy 800, 800H, and 800HT are part of the same alloy family but differ slightly in carbon and aluminum-titanium content, making them suitable for different heat and pressure environments. These tubes are commonly available as seamless tubes, welded tubes, ERW tubes, round tubes, heat exchanger tubes, redrawn tubes, and EFW tubes. Chemically, they are made of nickel (30–35%), chromium (19–23%) and iron (balance), with small amounts of carbon, aluminum, and titanium. This composition makes them resistant to oxidation, carburization, and corrosion, especially in high-temperature applications. All tubes comply with ASTM B163/B407, ASME SB163/SB407, and DIN/EN standards. Available forms include Inconel 800 Welded Round Tube, Inconel 800 ERW Tube, Inconel Alloy 800HT Welded Tube, and more. We are ISO certified company and have ready stock available in different sizes and shapes, and export quickly throughout the world.
Benefits of Incoloy 800/800H/800HT Tubes
Incoloy 800-series tubes have superior strength and durability for critical applications. For heavy use at high temperatures, these tubes are perfect for chemical processing, power generation, and refinery services. Their corrosion resistance and stable form is a wise choice for long-term investment.
- Retention of structure and mechanical properties through 1100°C, best suited for extreme heat applications such as heat exchangers and reactors.
- Resists carburization, oxidation, and chloride stress corrosion cracking in acidic and basic environments.
- Modified versions (800H, 800HT) offer excellent creep and rupture resistance under pressure and heat.
- These versions are easily fabricated and welded without losing strength, making them suitable for complex industrial constructions.
- It maintains dimensional stability under temperature fluctuations, thereby reducing the risk of thermal fatigue.
- Oil & gas, chemical plants, power plants, and aerospace industries utilize this versatile material.
Incoloy 800/800H/800HT Tubes Specifications
Seamless Tube OD : 6 mm OD x 0.7 mm to 50.8 mm OD x 3 mm thk.
Welded Tube OD : 6.00 mm OD up to 914.4 mm OD
EFW Tube Size : 3.35 mm OD To 101.6 mm OD
ASTM B407, B515 / ASME SB407, SB515
Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random, Standard & Cut length Tube
Plain End, Beveled End, Treaded Tube
SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements
Contact us today to discuss how Incoloy 800/800H/800HT Tubes can benefit your application. Whether you need guidance in selecting the right Tubes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| 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 |
| 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 % |
| 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 |
Incoloy Tubes Grades We Offer
Difference Between Incoloy 800/800H/800HT Tubes and Incoloy 825 Tubes
Though Incoloy 800 series, and Incoloy 825 offer resistance to high-temperature conditions, the two differ in application based on chemical composition. Incoloy 800/800H/800HT is created for thermal resistance, sustaining structural integrity with prolonged exposure to heat, particularly in furnace components and heat exchangers. In contrast, Incoloy 825 has higher nickel, molybdenum and copper content, which gives it superior resistance to acidic corrosion, making it more suitable for sulfuric, and phosphoric acid environments. In short, choose the 800 series for high-temperature mechanical stability, and 825 for harsh chemical resistance.
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 Tubes
Incoloy 800, 800H, and 800HT Tubes are used in high-temperature and high-pressure environments where material stability is essential. These include petrochemical processing, heat exchangers, power generation boilers and nuclear steam generators. Their strength at elevated temperatures makes them perfect for furnace components, superheater tubes, and reformer outlets. They also serve in aerospace, refineries, and chemical processing plants that demand resistance to oxidation and carburization. With their form flexibility, they are used as Incoloy 800 Instrumentation Tubes, Incoloy 800HT Welded Tubes, Alloy 800H Polish Tubes, and more.
Why Choose Midland Alloys Inc. for Incoloy 800/800H/800HT Tubes
Midland Alloys Inc. delivers consistent quality and precision in every Incoloy 800-series tube. We provide a broad range of forms including Inconel 800H Seamless Tube, UNS N08800 Seamless Tube, Incoloy 800® EFW Tubes, and 800 Inconel Heat Exchanger Tube, built to meet international standards. To ensure mechanical and dimensional accuracy, each product undergoes various types of tests, such as hydrostatic testing, PMI, ultrasonic testing, and visual inspection. Our extensive inventory, ISO-certified procedures, and worldwide supply capabilities allow us to meet diverse industry needs reliably and efficiently.
FAQs
While copper is preferred for conductivity, incoloy performs better in corrosive, and high-temperature environments.
Depending on the grade, Incoloy, a nickel-iron-chromium alloy, contains different amounts of titanium, aluminum and carbon.
Incoloy 800H is designed for use in high-heat industrial environments up to 1100°C (2010°F).
