What are the Main Properties and Uses of Inconel718

(What are the Main Properties and Uses of Inconel718)

What is Nickel-based Super Alloy Inconel718:

Inconel 718 or In718 is a nickel-chromium-molybdenum alloy. It is an
oxidation-resistant and corrosion-resistant material ideal for use in extreme
environments under pressure and heat. In718 was invented in the early 1960s in
INCO Huntington Alloys (now Special Metals Co.) and used in turbine parts
manufacturing. Since then, In718 has become the most widely used nickel-based
superalloy in the history of aero-engines. The unique alloy composition of In718
enables it to have good comprehensive properties, namely high strength, creep
resistance, etc. Especially under 650℃, it has good stability in terms of
mechanical properties. Many parts of modern aero-engines, such as turbine discs,
blades, brakes, shafts, stators, seals, supports, pipes, fasteners, are made of
In718.

Properties of Nickel-based Super Alloy Inconel718:

When heated, a thick and stable passivating oxide layer is formed on the
surface of the alloy, protecting the surface from further erosion. It exhibits
high yield, tensile, and creep fracture properties at high temperatures.
Inconel718’s high-temperature strength is developed by solid solution
strengthening or precipitation hardening. Inconel718 has good comprehensive
properties in the temperature range of -253 ~ 700℃ (1290°F). Its yield strength
below 650℃ ranks first among the deformation superalloys. It has good fatigue
resistance, radiation resistance, oxidation resistance, corrosion resistance,
and good machining and welding performance. Various complex-shaped parts can be
produced with Inconel718, and thus Inconel718 is widely used in aerospace,
nuclear energy, petroleum industry, and extrusion die in the above temperature
range.

Applications of Nickel-based Super Alloy Inconel718:

Chemical processing;Gas turbine blades, seals, and
combustors;High-temperature fasteners;Pressure vessels;Aerospace industry, for
constructing heat resistant turbines;Low-temperature storage tanks;Nuclear
energy industry;Petroleum industry.

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(What are the Main Properties and Uses of Inconel718)