INCONEL alloy 617 (UNS N06617/W.Nr. 2.4663a) is a solid-solution, strengthened, nickel-chromium-cobalt- molybdenum alloy with an exceptional combination of high-temperature strength and oxidation resistance.
Inconel Alloy 617’s strength comes from cobalt (10–15%) and molybdenum (8–10%). Should even higher performance be required, INCONEL alloy 625 has a similar composition to 617 with the addition of niobium, which enhances the alloy’s strength without the need for specific heat treatment.
INCONEL Alloy 617 also exhibits excellent cyclic oxidation resistance. Oxidation testing of the alloy at high temperatures demonstrated its ability to form and maintain a protective surface oxide under extreme thermal cycling conditions
The combination of high strength and oxidation resistance at temperatures over 1800°F (980°C) makes INCONEL alloy 617 an attractive material for such components as ducting, combustion cans, and transition liners in both aircraft and land-based gas turbines.
Available Product Forms:
Pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon, wire and extruded
INCONEL alloy 617 is designated as UNS N06617 and Werkstoff Nr. 2.4663a.
Rod, Bar, Wire, and Forging Stock: ASTM B 166; ASME SB 166 (Rod, Bar and Wire), ASTM B 564; ASME SB 564 (Forgings), AMS 5887 (Bars, Forgings and Rings), VdTÜV 485 (Sheet, Plate, Bar and Tubing), ISO 9724 (Wire), DIN 17752 (Rod and Bar), DIN 17753 (Wire), DIN 17754 (Forgings)
Plate, Sheet, and Strip: ASTM B 168; ASME SB 168 (Plate, Sheet and Strip), AMS 5888 (Plate), AMS 5889 (Sheet and Strip), VdTÜV 485 (Sheet, Plate, Bar and Tubing), ISO 6208 (Plate, Sheet and Strip), DIN 17750 (Plate, Sheet and Strip).
Pipe and Tube: – VdTÜV 485 (Sheet, Plate, Bar, and Tubing), ISO 6207 (Tubing), ASTM B 546; ASME SB 546 (Pipe), DIN 17751 (Pipe and Tube)
Composition: DIN 17744
Welding Products: – INCONEL Filler Metal 617 – AWS A5.14/ERNiCrCoMo-1; INCONEL Welding Electrode 117 – AWS A5.11 / ENiCrCoMo-1
Standards
| Material No. | EN Designation | UNS | Alloy |
| 2 .4663 | NiCr23Co12Mo | N06617 | 617 |
Description
Alloy 617 / 2.4663 is a nickel-chromium-cobalt-molybdenum alloy.
Special properties
Excellent mechanical properties up to 1100℃. Excellent resistance to oxidation up to 1100℃.
Chemical Composition
| Cr | Mo | Co | Ni | Ti |
| 20-23 | 8.50-10.0 | 11.0-14.0 | Rest | 0.20-0.60 |
| C | Si | Mn | P | S |
| 0.05-0.10 | ≤0.20 | ≤0.20 | ≤0.01 | ≤0.01 |
| B | Fe | Cu | Al | |
| ≤0.006 | ≤2.00 | ≤0.50 | 0.70-1.40 |
Mechanical Properties 20℃
| 0.2% Yield strength Rp 2≥N/mm2 | Tensile strength RmN/mm2 | Elongation A5≥% | Modulus of elasticitykN/mm2 |
| 300 | 690 | 35 | 212 |
Physical Properties 20℃
| Densityg/cm3 | specific heat capacityJ/kg K | Thermal conductivity W/m K | Electrical resistivityΩ mm2/m |
| 8.4 | 420 | 13.4 | 1.22 |
Suitable welding filler materials
2.4627; 2.4628
Application
Components for gas turbines, petrochemical industry