INCONEL® alloy 617


Inconel 617 Alloy Steel Bar

Inconel 617/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. The alloy also has excellent resistance to a wide range of corrosive environments, and it is readily formed and welded by conventional techniques.

The limiting chemical composition of INCONEL alloy 617 is listed in Table 1. The high nickel and chromium contents make the alloy resistant to a variety of both reducing and oxidizing media. The aluminum, in conjunction with the chromium, provides oxidation resistance at high temperatures. Solid-solution strengthening is imparted by the cobalt and molybdenum.

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. Because of its resistance to high-temperature corrosion, the alloy is used for catalyst-grid supports in the production of nitric acid, for heat-treating baskets, and for reduction boats in the refining of molybdenum. INCONEL alloy 617 also offers attractive properties for components of power-generating plants, both fossil- fueled and nuclear.

Property values are given in both United States customary units and the International System of Units (SI). The SI unit of stress is the pascal (Pa), which is equivalent to newton per square metre. The approximate relationship between the pascal and the pound per square inch (psi) is 1 Pa = 0.0001450 psi, or 1 psi = 6895 Pa.

Inconel 617 Physical Constants and Thermal Properties:

Melting range and some physical constants at room temperature are shown in Table 2. The alloy’s low density, compared with tungsten-containing alloys of similar strength, is significant in applications such as aircraft gas turbines where high strength-to-weight ratio is desirable.

Thermal properties of alloy 617 at temperatures to 2000°F (1095°C) are given in Table 3. Values for thermal conductivity and specific heat were calculated; other values were measured. Thermal expansion of INCONEL alloy 617 is lower than that of most other austenitic alloys, reducing stresses from differential expansion when the alloy is coupled with carbon steels or low-alloy steels.

Modulus of elasticity of INCONEL alloy 617 is shown along with Poisson’s ratio (calculated from moduli of elasticity) in Table 4. The modulus values were determined by a dynamic method.

Inconel 617 Chemical Composition:

The chemical composition of Inconel 617™ is given in the following table.

ElementsContent (%)
Nickel, Ni48.85-62
Chromium, Cr20-24.0
Cobalt, Co10-15
Molybdenum, Mo8-10
Manganese, Mn≤ 1
Silicon, Si≤ 1
Carbon, C≤ 0.15

Inconel 617 Physical Properties:

The following table shows the physical properties of Inconel 617™.

Density8.3g/cm³0.302 lb/in³
Melting point1363°C2485°F

Inconel 617 Mechanical Properties:

The mechanical properties of Inconel 617™ are displayed in the following table.

Tensile strength≥ 485 MPa≥ 70300 psi
Yield strength≥ 275 MPa≥ 39900 psi
Elongation at break≥ 25%≥ 25%
Hardness, Brinell170170

Inconel 617 Specifications

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

Trademark Notice: Some names are trade names and/or trademarks of specific manufacturers. American Special Metals, Corp. is not affiliated with any manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.

Inconel® 617 is a Registered Trademarks of Special Metals Corporation and Its subsidiaries.