Hangbo Alloy Group
Shanghai · Est. 2012
UNS N06617 / W.Nr. 2.4663a — Chemical composition, mechanical properties, and corrosion resistance data for engineers and procurement professionals.
Inconel 617 (UNS N06617 / W.Nr. 2.4663a) is a solid-solution strengthened nickel-chromium-cobalt-molybdenum alloy with exceptional oxidation resistance and high-temperature strength up to 1200°C. The combination of chromium, aluminum, and cobalt provides superior resistance to oxidation, carburization, and sulfidation.
The chemical composition of Inconel 617 is carefully controlled to achieve its unique combination of properties and performance characteristics.
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | 44.5 | Balance |
| Chromium (Cr) | 20.0 | 24.0 |
| Cobalt (Co) | 10.0 | 15.0 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Aluminum (Al) | 0.80 | 1.50 |
| Iron (Fe) | — | 3.0 |
| Carbon (C) | 0.05 | 0.15 |
| Titanium (Ti) | — | 0.6 |
The mechanical properties of Inconel 617 vary depending on product form and heat treatment condition. The data below represents typical values for solution-annealed material.
| Property | Value |
|---|---|
| Tensile Strength | 740 MPa |
| Yield Strength (0.2% offset) | 310 MPa |
| Elongation in 2 inches | 48% |
| Density | 8.36 g/cm3 |
| Melting Point | 1363 °C |
| Max Service Temperature | 1200 °C |
Outstanding oxidation resistance up to 1200°C due to the formation of a protective chromium-aluminum oxide scale. Excellent resistance to carburization in high-temperature environments. Good resistance to molten salt corrosion.
The unique combination of properties makes Inconel 617 suitable for a wide range of demanding applications:
Hangbo Alloy Group manufactures and supplies Inconel 617 in the following product forms, conforming to ASTM, AMS, and ASME specifications:
| Standard | Description |
|---|---|
| ASTM B168 | Plate, Sheet, and Strip |
| ASTM B167 | Seamless Pipe and Tube |
| ASTM B166 | Bar and Rod |
| ASTM B564 | Forgings |
| ASTM B546 | Electric Fusion Welded Pipe |
| AMS 5887 | Bar and Forging |
Inconel 617 combines solid-solution strengthening with cobalt and molybdenum to deliver the highest creep-rupture strength among the common solid-solution nickel superalloys in the 700–950 °C band.
| Temperature | Stress for 100 000 h rupture |
|---|---|
| 650 °C | ≈ 190 MPa |
| 750 °C | ≈ 100 MPa |
| 850 °C | ≈ 50 MPa |
| 950 °C | ≈ 20 MPa |
| Oxidation limit | ≈ 1100 °C |
It is the baseline material for advanced-ultra-supercritical boiler tubing, gas-turbine combustor hardware and high-temperature heat exchangers. See creep and stress rupture for how to read these curves.
Around 1100 °C for oxidation resistance. For load-bearing parts, design is limited by creep: above roughly 950 °C the allowable stress falls to a level where thicker sections or a different alloy is usually more economical.
617 is stronger and more oxidation-resistant above 700 °C. 625 has better aqueous corrosion resistance and is easier to weld. Furnace and turbine hot-section work favours 617; chemical process equipment favours 625.
Yes — 617 is covered by ASME Section III for high-temperature nuclear applications and by Section I / VIII for boiler and pressure-vessel service. Hangbo supplies with full traceability.
UNS N06617 / W.Nr. 2.4663a: 44.5% min nickel, 20-24% chromium, 10-15% cobalt, 8-10% molybdenum and 0.8-1.5% aluminum. Chromium, aluminum and cobalt combine for oxidation and high-temperature strength.
Solid-solution strengthening from cobalt and molybdenum plus a protective chromium-aluminum oxide scale, giving useful strength and oxidation resistance to about 1200 °C.
Tensile about 740 MPa, yield about 310 MPa and 48% elongation at room temperature in the solution-annealed condition.
Gas-turbine combustion hardware, industrial furnace components and high-temperature gas-cooled reactor (HTGR) parts where creep and oxidation resistance are required.
It is weldable with matching ERNiCrCoMo-1 filler; solution annealing after welding restores corrosion resistance. Load-bearing parts above roughly 950 °C are creep-limited.
As round bar, plate, sheet, tube, forgings and wire, with full mill test certification and traceability.
Hangbo Alloy Group maintains extensive inventory of Inconel 617 in all standard product forms. We can provide mill test certificates, third-party inspection reports (SGS, TUV), and custom processing services.
For quotations, material certifications, or technical consultation, contact our sales team or call +86 166 2109 2936. We typically respond within 10 minutes.
Request a quotation for Inconel 617 round bars, tubes, plates, or custom products. We stock standard sizes and accept custom orders.