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Inconel 718 bars, a formidable member of the Inconel alloy family, have emerged as a cornerstone in various industries owing to their exceptional mechanical properties, corrosion resistance, and adaptability to extreme conditions. This alloy, primarily composed of nickel, chromium, and molybdenum, showcases remarkable strength at elevated temperatures, making it indispensable in critical applications across aerospace, oil and gas, nuclear, and chemical sectors. 

Chemical Composition of Inconel 718 Bars:

Explore the precise chemical composition of Inconel 718 Bars for optimal performance in various high-temperature applications.

Al.5 max
Cb+Ta5.13
Co1 max
Fe18.5 max
Mo3.05 max
Ni52.5 max
Ti.9 max

Inconel 718 Bars exhibit a well-balanced chemical composition, ensuring exceptional high-temperature strength, corrosion resistance, and reliability.

Types of Inconel 718 Bars:

  • Inconel 718 Round Bars: These cylindrical bars are renowned for their uniform strength and are extensively used in applications demanding high-performance materials. Inconel 718 round bars are prevalent in aerospace components, where their ability to withstand extreme temperatures and corrosive environments is crucial.
  • Inconel 718 Hexagonal Bars: Hexagonal bars offer enhanced machinability and are well-suited for applications requiring strength and precision. Inconel 718 hexagonal bars find utility in manufacturing fasteners, bolts, and nuts, contributing to the stability of mechanical structures.
  • Inconel 718 Square Bars: Square bars provide stability and strength with their four equal sides. Inconel 718 square bars are employed in various engineering applications, including structural components and machinery parts, where square profiles are preferred for specific design requirements.
  • Inconel 718 Flat Bars: Flat bars featuring a rectangular cross-section are ideal for surface stability applications. Inconel 718 flat bars are used in the fabrication of braces, brackets, and base plates, contributing to the overall structural integrity of diverse engineering projects.

Physical Properties of Inconel 718 Bars:

Explore the intrinsic characteristics of Inconel 718 Bars through a comprehensive and informative Physical Properties table.

Aged ConditionAnnealed Condition 
Density0.297 lb./in3 (8.22 g/cm3)0.296 lb./in3 (8.19 g/cm3)
Specific Gravity8.228.19

Inconel 718 Bars showcase superior physical properties, ensuring stability, resilience, and reliability in high-temperature applications.

Applications of Inconel 718 Bars:

  1. Aerospace Industry: The aerospace sector relies heavily on Inconel 718 bars for critical components. These bars are integral to constructing turbine discs, engine casings, and fasteners. The alloy's ability to maintain strength and resist corrosion in extreme conditions ensures the reliability and safety of aerospace applications.
  2. Oil and Gas Sector: Inconel 718 bars play a pivotal role in the oil and gas industry, where resistance to corrosive environments and high-pressure conditions is paramount. Downhole tools, wellhead components, and valves benefit from the alloy's robust properties, contributing to the efficiency and longevity of equipment in this demanding sector.
  3. Nuclear Engineering: Inconel 718 bars find extensive application in nuclear engineering due to their ability to withstand high temperatures and resist corrosion in radioactive environments. From reactor components to fuel handling systems, the alloy's reliability is crucial to the safety and efficiency of nuclear power plants.
  4. Chemical Processing: The chemical processing industry relies on Inconel 718 bars to resist corrosive chemicals and elevated temperatures. Reactors, vessels, and piping systems made from Inconel 718 bars contribute to the longevity and reliability of equipment in this demanding sector.

Mechanical Properties of Inconel 718 Bars:

Discover the robust mechanical characteristics of Inconel 718 Bars through a comprehensive and informative properties table.

ElongationDensityTensile StrengthMelting PointYield Strength (0.2%Offset)
45 %8.2 g/cm3Psi – 1,35,000 , MPa – 9301350 °C (2460 °F)Psi – 75,000 , MPa – 482

Inconel 718 Bars exhibit impressive mechanical properties, including high-temperature strength, corrosion resistance, and durability for reliable performance.

Benefits of Inconel 718 Bars:

  1. High-Temperature Resistance: Inconel 718 bars excel in maintaining their structural integrity at high temperatures, making them a preferred choice for applications involving extreme heat, such as gas turbines and industrial heating processes.
  2. Corrosion Resistance: Corrosion resistance is a hallmark of Inconel 718 bars. Their ability to withstand aggressive chemical environments, saltwater exposure, and corrosive gases positions them as a material of choice in marine, chemical, and oil and gas applications.
  3. Fatigue Resistance: Inconel 718 bars exhibit exceptional fatigue resistance, ensuring they endure cyclic loading and stress without compromising structural integrity. This property contributes to the longevity and reliability of components in dynamic applications.
  4. Versatility in Fabrication: The availability of Inconel 718 bars in different shapes – round, hexagonal, square, and flat – enhances their versatility in fabrication. This adaptability caters to diverse engineering requirements, allowing for the creation of complex structures and components.
  5. Weldability: Inconel 718 bars are weldable, facilitating the construction of intricate structures and offering easy repairs. This characteristic contributes to the flexibility and adaptability of Inconel 718 bars in various industrial settings.

Inconel 718 bars stand as a testament to the continuous evolution of materials engineering. Their diverse types cater to various applications, providing unmatched strength, corrosion resistance, and versatility. Across aerospace, oil and gas, nuclear, and chemical industries, Inconel 718 bars are a go-to material for engineers and manufacturers, contributing significantly to technological advancements and industrial progress.

FAQ's for Inconel 718 Bars

Inconel 718 Bars are special nickel-chromium-based alloy bars that offer good corrosion resistance and high strength even at elevated temperatures. It is routinely used in aerospace applications, where it is exposed to extreme temperatures and pressures.

Inconel 718 Bars are best suited for high temperature applications due to their superior strength and corrosion resistance. They are often used in aerospace, nuclear reactors, and chemical processing plants for a variety of parts like bolts, studs, nuts, shafts and valve stems.

Yes, Inconel 718 Bars can be machined easily with standard methods such as turning, drilling and milling on conventional machines. Moreover, its high thermal stability makes it suitable for welding with all common processes including gas tungsten arc (GTAW).

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