Mechanical characteristics of Inconel 617

Alloy 617 attains good mechanical characteristics at the high temperatures. Its supreme characteristic is its strength level that is retained at the wider limits. Alloy’s high resistance to the high points increases the significance of its room temperature mechanical properties.

The mechanical characteristics of different forms of alloy 617 are shown as following:

Hot rolled Inconel 617 plate

Yield strength – 46.7 ksi

Tensile strength – 106.5 ksi

Elongation – 62%

Reduced Area- 56%

Hardness – 172 BHN

Hot rolled Inconel 617 bar

Yield strength – 46.1 ksi

Tensile strength – 111.5 ksi

Elongation – 56%

Reduced Area- 50%

Hardness – 181 BHN

Cold rolled Inconel 617 tube

Yield strength – 55.6 ksi

Tensile strength – 110 ksi

Elongation – 56%

Hardness – 193 BHN

Cold rolled Inconel 617 sheet and strip

Yield strength – 50.9 ksi

Tensile strength – 109.5 ksi

Elongation – 58%

Hardness – 173 BHN

This information is ideal for materials that are in solution annealed form. The characteristics of the above stated forms are crosswise. The analytics materials are selected in the standard configuration. The big cycle fatigue strength of alloy 617 at the room and high temperatures about 1600oF is determined. The rotating light test is conducted on the coarse grain, solution annealed and hot processed rod. The combined evaluation of test results s observed for the welded joints. The alloys joints are connected by gas metal arc method by using the similar constituted filler metal.

The development of alloy 617 sheet depends on the requirement of maximum creeping strength at the elevated points. The solution annealing is selective to provide the coarse grain necessary for the extreme high temperature creep resistance. Presently, the hot gas turbine experts understand the need of finding low cycle fatigue strength and creep strength. The preparation depends performing this evaluation. The tension- tension axial load controlled test is conducted at 1100 – 1400oF.

An improvement in LCF function with ASTM grain size up to 4-5% is crucial. After the vast thermochemical processing, the controlled practice is performed that controls the grain size around 3 – 6%. Nominal changes in alloy’s chemistry offer improved grain size and stress rupturing characteristics. The combination of alloy chemistry optimization and controlled processing offer significantly improved LCF performance of alloy 617 sheet with nominal or no change in creeping resistance characteristics in coarse grain material. An improved LCF service is also maintained at the high temperatures. Alloy 617 retains prolong metallurgical consistency and strength.

Alloy 617 is known for its supreme metallurgical stability and high strength. The alloy specimen are used in the solution annealed form before exposing it in the service media. The strengthening is achieved to carbide development and exposure temperature at 1200oF to 1400oF to the precipitation of gamma prime. Alloy 617 attains large level of creeping strength at high temperatures about 1800oF and above. The characteristics combined with outstanding resistance to oxidation and carburization offer alloy potential to introduce extended large stress at the elevated limits.

The creeping resistance of alloy 617 in the solution annealing form  upto 2000oF is evaluated. The rupture characteristics of solution annealed metal at the same limit are evaluated. The studies are performed on various forms such as bar, tube and sheet components. The design standards permitted design stress for alloy 617 forms is received.

Alloy 617 contains nickel, chromium and aluminum in significant magnitudes to offer good resistance to oxidation and carburization at the high temperatures. These constituents with molybdenum also offer strength to prevent corrosion in severely corrosive media.

The corrosion resistance characteristic of alloy 617 to cyclic oxidation at temperature around 2000oF is crucial. The study is conducted on thin alloy strip and consisting of exposure cycle to temperature for a small length of time after air quenching is done. The outcomes describe the potential of alloy to develop and retain the security oxide layer in the strict conditions of severe heat cycling. The specimen of thin alloy 617 sheet and plate was subjected to the testing temperature for 50 hour cycles to find the loss in magnitude of alloy after each cycle.

The corrosion resistance of Inconel alloy 617 offers significant strength, heat resistance and prevent continuous oxidation in the moisture at temperatures around 1832oC. The excellent resistance characteristics of alloy 617 to oxidation are received by the availability of aluminum and chromium elements. These elements result into the development of thin oxide layer that is developed upon heating at the elevated temperatures. The oxidized layer provides the complete diffusion media for the development of security chromium oxide layer on the metallic surface. It also offers spalling of the security layer developed during oxidation.


It retains wide resistance to aqueous corrosion to the vast range of corrosive conditions. Inconel alloy is widely used in the high temperature applications.