Applications and Benefits of Inconel 718 Round Bar

Inconel 718 Round Bar

Besides its use in construction, Inconel 718 round bar has a wide range of applications, especially in the oil and gas industry. It is also used in the nuclear industry and the paper industry. This alloy is also known for its oxidation resistance so it can be used in areas with a high risk of corrosion. It can also be used in aerospace and marine applications.


Using Inconel 718 round bar in aerospace applications is advantageous because of its high strength and corrosion resistance. This alloy is used for heat exchange tubing, flare booms, and high-pressure compressors section. It also performs very well at high temperatures, oxidation, and cryogenic conditions.

Its high tensile properties, crevice and pitting corrosion resistance, and high creep-rupture resistance make it a perfect choice for aerospace applications.

This alloy is used in aircraft engines, flare booms, and power plants. It performs exceptionally well at high temperatures, oxidation, hydrogen sulfide, and sour gas. Its corrosion resistance and high strength make it suitable for use in oil and gas wells.


Several studies have been conducted on the fatigue behavior of the Inconel 718 alloy. These studies were carried out on both as-deposited material and fabricated components. The fatigue behavior of Inconel 718 Bar must be studied before its use in load-bearing applications.

These studies investigated the effect of Sn additions on the alloy’s microstructure. It was found that additions of Sn were not detrimental to the microstructure of Inconel 718. However, these additions reduced the tensile yield strength of the material. These additions of Sn were in the range of 200 ppm or more. Consequently, the tensile yield strength was reduced by approximately 30%. These additions also reduced the ductility of the material.

The fracture toughness of the specimens was determined at room temperature. The material exhibited a mixed fracture mechanism. There was some fracture cracking in the heat-affected zones of the specimens during post-weld heat treatment. There was also some strain cracking.

Oil and gas

Despite being used in the aerospace industry for years, Inconel 718 has become increasingly prevalent in the oil and gas industries. Its high strength and resistance to stress corrosion cracking make it a great choice for down-hole applications.

Inconel 718 is also known as Nickel 718 or Alloy 718. It is a nickel-chromium alloy that is corrosion-resistant and has high tensile strength. It is often used for gas turbine parts, rocket motors, downhole measurement equipment, and downhole fasteners. It is also used in downhole directional drilling, subsea valves, and packers. In addition, it has high resistance to oxidation to 1800 ℉. It can be precipitation hardened without post-weld cracking and resistant to crevice corrosion.

Benefits of Inconel 718 Round Bar

Among the alloys of the Inconel family, Inconel 718 Bar offers excellent resistance to oxidation at a high temperature. Inconel 718 round bar comprises chromium, molybdenum, titanium, and iron. The chromium gives the alloy good corrosion resistance at room temperature, while the other alloying elements form an oxide layer to protect the metal from oxidation. These elements also contribute to the high tensile strength of the alloy. The alloy retains its oxidation resistance after age hardening. The oxidation performance of Inconel 718 was studied in three regimes. In the high-temperature regime, the specimens were exposed to air for varying periods. The samples were then cooled. Afterward, mass-gain measurements were made to identify the regimes.

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