Editorial Feature

Super Alloy Inconel 617™ (UNS N06617)

Updated by Reginald Davey 07/09/2023

Super alloys or high-performance alloys are defined by their good creep and oxidation resistance. They have the ability to function under high temperatures and mechanical stress and are available in different shapes.

inconel 617, inconel 617 properties

Image Credit: Dabarti CGI/Shutterstock.com

There are three main groups of high-performance alloys: cobalt-based, nickel-based, and iron-based. All three types can be used at temperatures above 540°C (1000°F). Different combinations of alloys are used to produce commercial products with the desired physical, mechanical, thermal, and chemical properties.

A registered trademark of Special Metals Corporation and its subsidiaries, Inconel 617 is a solid-solution strengthened alloy that has good oxidation resistance in a wide variety of corrosive media. The following datasheets will discuss chemical composition and Inconel 617 properties.

Chemical Composition

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

Elements Content (%)
Nickel, Ni 48.85-62
Chromium, Cr 20-24.0
Cobalt, Co 10-15
Molybdenum, Mo 8-10
Manganese, Mn ≤ 1
Silicon, Si ≤ 1
Carbon, C ≤ 0.15

Physical Properties

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

Properties Metric Imperial
Density 8.3g/cm³ 0.302 lb/in³
Melting point 1363°C 2485°F

Mechanical Properties

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

Properties Metric Imperial
Tensile strength ≥ 485 MPa ≥ 70300 psi
Yield strength ≥ 275 MPa ≥ 39900 psi
Elongation at break ≥ 25% ≥ 25%
Hardness, Brinell 170 170

Other Designations

Other Inconel 617 designations are UNS N06617 and DIN 2.4663a. Other common trade names are Nicrofer 617 and Alloy 617.

Fabrication and Heat Treatment


Inconel 617 is machined using conventional machining methods usually used for iron-based alloys. Machining operations are performed using commercial coolants. High-speed operations such as grinding, milling, or turning are performed using water-base coolants.


Inconel 617™ can be formed using all conventional techniques.


Inconel 617 is welded using gas-tungsten arc welding, shielded metal-arc welding, gas metal-arc welding, and submerged-arc welding methods.

Heat Treatment

Inconel 617™ is heat treated by annealing at 1177°C (2150°F) followed by quenching in water or cooling in air for thinner sections.


Inconel 617™ is forged at 1010 to 1205°C (1850 to 2200°F).

Hot Working

Inconel 617™ is hot worked at 927 to 1205°C (1700 to 2200°F).

Cold Working

Inconel 617™ can be cold worked using standard tooling.


Inconel 617™ is annealed at 1177°C (2150°F) followed by cooling.


Inconel 617™ can be hardened by cold working.


Inconel 617 is commercially available as pipes, bars, fittings, sheets, plates, and wires. Applications include aerospace parts, petrochemical processing parts, furnaces, gas turbines, combustion cans, ducts, components in power stations, and parts for welding tools.

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