Inconel 617 Fittings Supplier, Stockist and Exporter
Table of Contents
Aurico Alloys LLP supplies Inconel 617 fittings (N06617, Werkstoff 2.4663) to ASTM B366 from Mumbai, to customers across India and in more than 40 export markets.
In a high-temperature line the fittings creep first. An elbow or a tee concentrates stress at its intrados and branch, and above 800°C stress plus time is what creep is. A 617 line is specified for its creep-rupture strength, so a fitting in anything weaker quietly becomes the part that sets the line’s life.
Sizes and Specifications
| Grade | Inconel 617 |
|---|---|
| UNS number | N06617 |
| Werkstoff (W.Nr.) | 2.4663 |
| Specifications | ASTM B366 (factory-made wrought fittings) |
| Size range | Butt-weld fittings 1/2" to 48" NB in Sch 5S to Sch XXS; forged socket-weld and threaded fittings 1/8" to 4" NB in 3000#, 6000# and 9000# classes. |
| Condition and finish | Elbows (45° and 90°, long and short radius), tees (equal and reducing), reducers (concentric and eccentric), caps, stub ends, couplings, unions, plugs and bushings. |
| Certification | EN 10204 3.1 mill test certificate; 3.2 and third-party inspection on request |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N06617 |
| Werkstoff / EN number | 2.4663 |
| Density | 8.36 g/cm3 |
| Melting range | 1332-1380 °C |
| Specific heat (26 °C) | 419 J/kg·°C |
| Electrical resistivity (26 °C) | 1.22 µΩ·m |
| Fittings specification | ASTM B366 |
Identifiers and physical constants for Inconel 617. A dash means no such designation is published for this grade.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 44.5 | — |
| Chromium (Cr) | 20.0 | 24.0 |
| Cobalt (Co) | 10.0 | 15.0 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Aluminium (Al) | 0.8 | 1.5 |
| Carbon (C) | 0.05 | 0.15 |
| Iron (Fe) | — | 3.0 |
| Manganese (Mn) | — | 1.0 |
| Silicon (Si) | — | 1.0 |
| Sulfur (S) | — | 0.015 |
| Titanium (Ti) | — | 0.6 |
| Copper (Cu) | — | 0.5 |
| Boron (B) | — | 0.006 |
Composition limits for Inconel 617. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical and Physical Properties
Fittings are supplied annealed. Room-temperature tensile is around 740 MPa, but what matters in service is creep-rupture strength between 800 and 1100°C, where 617 leads the solid-solution nickel alloys.
Industry Applications
Why Inconel 617 fittings
Matching the fittings to the pipe matters more in creep service than in almost any other. The pipe wall is calculated for 617’s strength at temperature; drop in a fitting in a weaker alloy at the same schedule and its wall is under-designed by definition. B366 fittings are made from 617 itself, so the stress calculation that sized the line holds at every bend and branch.
| Industry | Typical use |
|---|---|
| Power generation | Elbows, tees and reducers in advanced ultra-supercritical steam lines. |
| Nuclear | Fittings for hot-gas piping in high-temperature reactor designs. |
| Petrochemical | Bends and branches in lines running above 800°C. |
| Maintenance | Like-for-like 617 replacements matched to the original schedule. |
Testing and Certification
Every fitting is marked with grade and heat number and supplied with an EN 10204 3.1 certificate. Positive material identification confirms the cobalt-bearing grade fitting by fitting, dye-penetrant testing checks bevels and formed surfaces, and dimensions are checked against the ordered schedule. Third-party inspection is available under our ISO 9001:2015 system.
Frequently Asked Questions
Request a Quotation
Send your size, quantity and specification and we will come back with price and lead time, usually the same working day. Call +91 7977 88 6611 or email info@auricoalloys.com.