Inconel 617 can be used continuously up to 1100°C (2012°F) in oxidizing atmospheres. Short excursions above this are possible, but prolonged exposure reduces oxidation-scale stability and long-term creep life.
ASTM B167 Inconel 617 Seamless Pipe
Inconel 617 Seamless Pipe, a high-performance nickel-chromium-cobalt-molybdenum superalloy product, is known worldwide as UNS N06617, W.Nr. 2.4663, and EN NiCr23Co12 Inconel 617 or Nicrofer 5520 Co pipes. This product meets ASTM B167. We at XTD (Zhejiang Xintongda Special Steel) are a trusted manufacturer and supplier of Inconel 617 seamless pipes, with a rigorous production cycle that includes cold rolling, cold drawing, annealing, pickling, and straightening to ensure dimensional accuracy and structural integrity for critical industrial applications.
Inconel 617 Seamless Pipe actively resists metallurgical deterioration and corrosive attack. Its specific composition of 20–24% Cr, 10–15% Co, 8–10% Mo, and 0.8–1.5% Al provides high-temperature strength. This nickel alloy performs reliably under harsh conditions across temperatures from -196°C to 1100°C. Engineers choose it because its thermal adaptability delivers unmatched oxidation resistance during long-term exposure to intense heat and chemicals.
XTD produces 25,000 tonnes per year to support global energy and aerospace infrastructure. Since 1985, we have prioritised logistics and speed of delivery to keep your projects on track. Our stock items ship within a week, industry-leading. Depending on project requirements, we may manufacture custom orders in 15–60 days. XTD is the global leader in high-temperature plumbing solutions due to our quality and scalability.
Below are the technical specifications for our high-quality Inconel 617 seamless pipes, manufactured to standards.
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Standard
ASTM B167
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OD Range
6-457 mm
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Thickness
1-65 mm
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Length
Up to 18 m
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How Inconel 617 Seamless Pipe is Produced
We ensure high-quality Inconel 617 seamless pipe by adhering to strict manufacturing procedures. Production starts with a nickel-chromium-cobalt-molybdenum superalloy ingot that is hot extruded or pierced to form the seamless shell. Cold drawing, cold rolling, and pilger rolling size the pipe to precise dimensions.
Solution annealing restores the required microstructure, while pickling ensures surface cleanliness. Straightening, electrostatic testing, and hydrostatic pressure testing precede cut-to-length and packaging. Learn about our production process on our page. These technological measures ensure every tube we send is structurally sound.
Key Features of Inconel 617 Seamless Pipe
Review the following pointers below to learn about the distinguishing features of Inconel 617 seamless pipes.
- High-Temperature Oxidation Resistance It forms a stable, adherent chromium-rich oxide scale that resists spalling during thermal cycling. The protective layer remains intact up to 1100°C, making it suitable for continuous service in combustion and radiant-heat environments.
- Outstanding Creep-Rupture Strength Cobalt and molybdenum enhance solid solutions, providing extended creep-rupture life above 800°C. This piping maintains structural integrity in sections subjected to high thermal environments and continuous, high-intensity mechanical stress during operations.
- Excellent Thermal Fatigue Resistance A coefficient of thermal expansion matched with strong grain-boundary stability delivers resistance to thermal cycling cracks. This makes it the preferred choice for equipment that is repeatedly heated and cooled during operation.
- Superior Carburization Resistance Chromium and aluminium content resist carbon pickup in carbon-rich process streams. This preserves ductility and prevents catastrophic embrittlement in catalytic reformer service.
- Good Weldability and Fabricability Inconel 617 is weldable by GTAW, GMAW, and SMAW using matching filler metals. It can be hot- and cold-formed into tight radii without loss of mechanical properties.
- Long-Term Microstructural Stability It resists sigma, mu, and other detrimental phase formation during prolonged exposure above 800°C. Mechanical properties remain stable over the full design life of high-temperature process equipment.
ASTM B167 Inconel 617 Seamless Pipe Equivalent Materials
Global industries specify Inconel 617, a well-known nickel-chromium-cobalt-molybdenum superalloy. Common international equivalents support a consistent supply for engineering projects worldwide. We actively manage these standards to ensure your projects maintain total material consistency globally.
| GRADE | UNS | GB | JIS | DIN/EN | W.Nr. |
| Inconel 617 | N06617 | NS3117 | NCF 617 | NiCr23Co12Mo | 2.4663 |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- 100% PMI (Positive Material Identification)
- Heat Treatment Charts
- Third-Party Inspection Reports (TPI / TUV / BV / SGS)
- Manufacturer Test Certificate: Impact, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain Size, ET, UT, HT
- Laboratory Test Certificate from a Government-Approved Lab
Every shipment of Inconel 617 seamless pipe leaves our facility with comprehensive documentation verifying chemistry, mechanical performance, high-temperature behaviour, and dimensional accuracy. XTD holds ISO 9001, ISO 14001, and ISO 45001 and certifications including DNV, BV, ABS, and LR.
Inconel 617 Seamless Pipe Industrial Applications
XTD supplies Inconel 617 seamless pipes to industries requiring sustained high-temperature performance, including power generation, aerospace, petrochemical, and waste processing.
Gas Turbine Combustion Liners
We offer seamless Inconel 617 pipes for industrial and aero-derivative gas turbine combustion chambers and transition ducts. The pipes resist warping and oxidation above 950°C.
Nuclear Power Plant Components
Our Inconel 617 pipes serve Generation IV reactor intermediate heat exchangers and steam generators. The alloy is included in ASME Code Case N-47 for nuclear Class 1 service at elevated temperature.
Petrochemical Reformer Tubes
We provide Inconel 617 pipes for catalytic reformer outlet manifolds and transfer lines. The alloy resists carburisation and coking in hydrogen-rich environments at temperatures above 900°C.
Aerospace Engine Components
Afterburner liners and turbine exhaust systems utilise our pipes. High creep strength reduces wall thickness, reducing airframe weight without affecting structural integrity.
Solar Thermal Receivers
We supply Inconel 617 piping for concentrated-solar-power receiver panels. The alloy handles rapid thermal cycling and sustained operation above 900°C in both molten-salt and steam-based systems.
Waste Incineration Equipment
Our pipes serve municipal and hazardous-waste incinerator superheaters. The material resists chloride-induced hot corrosion common in waste-derived flue gases at high operating temperatures.
Frequently Asked Questions
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What is the maximum service temperature of Inconel 617?
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What standards govern Inconel 617 seamless Pipe?Inconel 617 Pipes are manufactured per ASTM B167 and ASME SB-167. For nuclear service, ASME Code Case N-47 applies. Chemistry, mechanical properties, heat treatment, and NDT requirements are fully covered by these specifications.
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How does Inconel 617 compare to other high-temperature alloys?Inconel 617's cobalt content allows it to outperform many competing alloys in terms of sustained creep strength above 900°C. It is a less expensive option to higher-nickel grades that yet has the same level of resistance to oxidation.
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Is Inconel 617 suitable for welded pressure vessel construction?Inconel 617 is ASME Code-approved and weldable with matching filler wire. Post-weld solution annealing is indicated for higher-temperature applications but not for service below 650°C.