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Inconel 718
Complete Technical Data Sheet for Inconel 718 Chemical Composition Mechanical Properties Physical Properties International Standards & Grade Equivalents Industrial Applications of Inconel 718 Aerospace Inconel 718 is a high-strength, corrosion-resistant nickel-chromium alloy ideal for aerospace applications. Its ability to withstand extreme temperatures and mechanical stress makes it perfect for jet engines, turbine components, and structural […]
Description
Explore Our Versatile Grade Inconel 718 Product Categories
Nickel Alloy Plates
Engineered for the most demanding environments, our Nickel Alloy Plates offer unparalleled durability and exceptional corrosion resistance. Ideal for aerospace, energy, and automotive applications, these plates deliver reliable high performance under extreme temperatures and pressures, ensuring your critical components never fail.
Nickel Alloy Bars/Rods
Our Nickel Alloy Bars and Rods provide superior strength and machinability for your most critical components. Engineered for extreme conditions, they offer exceptional corrosion resistance and high-temperature stability. Trust these versatile bars for unbeatable reliability in aerospace, energy, and automotive applications
Nickel Alloy Tubes
Our Nickel Alloy Tubes are engineered for superior performance in extreme environments. Offering exceptional corrosion and high-temperature resistance, they provide unmatched reliability for critical systems. Ideal for demanding aerospace, energy, and automotive applications, these tubes ensure durable, leak-proof operation when it matters most.
Nickel Alloy Wire
Our Nickel Alloy Wire delivers the perfect balance of strength, flexibility, and superior corrosion resistance. Engineered to perform in the most extreme environments, this wire ensures unmatched reliability for critical aerospace, energy, and automotive applications. Trust it for precision and durability where failure is not an option.
Complete Technical Data Sheet for Inconel 718
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 50.0 – 55.0 |
| Chromium (Cr) | 17.0 – 21.0 |
| Iron (Fe) | Balance |
| Molybdenum (Mo) | 2.8 – 3.3 |
| Niobium (Nb) + Tantalum (Ta) | 4.75 – 5.5 |
| Titanium (Ti) | 0.65 – 1.15 |
| Aluminum (Al) | 0.2 – 0.8 |
| Cobalt (Co) | ≤ 1.0 |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 0.35 |
| Silicon (Si) | ≤ 0.35 |
| Phosphorus (P) | ≤ 0.015 |
| Sulfur (S) | ≤ 0.015 |
| Boron (B) | ≤ 0.006 |
| Copper (Cu) | ≤ 0.3 |
| Property | Value |
|---|---|
| Tensile Strength | 135 ksi (930 MPa) |
| Yield Strength | 70 ksi (480 MPa) |
| Elongation | 12-15% |
| Hardness | 330-370 HB |
| Creep Rupture Strength | 23 ksi (160 MPa) at 1000°F (538°C) |
| Fatigue Strength | 45 ksi (310 MPa) |
| Property | Value |
|---|---|
| Density | 8.19 g/cm³ (0.296 lb/in³) |
| Melting Range | 1260-1336°C (2300-2437°F) |
| Thermal Conductivity | 11.4 W/m·K at 21°C |
| Specific Heat Capacity | 435 J/kg·K at 21°C |
| Electrical Resistivity | 1.29 µΩ·m at 21°C |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
| Coefficient of Thermal Expansion | 13.0 µm/m·K (21-100°C) |
| Standard | Grade |
|---|---|
| UNS | N07718 |
| ASTM | B637, B670, B815 |
| AMS | 5662, 5663, 5664 |
| DIN | 2.4668 |
| ISO | NiCr19Fe19Nb5Mo3 |
| EN | NiCr19Fe19Nb5Mo3 |
| BS | HR2 |
| JIS | NCF 718 |
Benefits of Using Inconel 718
High Temperature Strength
Inconel 718 is renowned for its exceptional strength at high temperatures, making it an ideal jet engine material. The alloy maintains its mechanical properties, exhibiting high tensile strength and yield strength even in extreme conditions. With its unique nickel-chromium composition, Inconel 718 parts resist oxidation and corrosion, ensuring reliability in aerospace applications. This superalloy’s ability to withstand creep and fatigue further enhances its performance in gas turbines.
Corrosion Resistance
The corrosion resistance of Inconel 718 alloy is a significant advantage in the aerospace industry, particularly in harsh environments. This superalloy withstands both oxidation and chemical corrosion, ensuring longevity and durability. Its mechanical properties remain intact even when exposed to extreme conditions, which is vital for jet engine applications. The alloy’s unique microstructure allows for effective heat treatment, enhancing its strength and performance in various aerospace applications.
Weldability and Fabrication
Inconel 718 offers excellent weldability, making it suitable for various fabrication methods, including additive manufacturing. The alloy can be welded without compromising its properties, which is crucial for creating complex components in the aerospace sector. Its mechanical strength post-weld is maintained, ensuring the integrity of jet engine materials. Additionally, Inconel 718’s resistance to thermal stresses and its ability to undergo heat treatment enhance its usability in demanding applications.
Age Hardening and Strength
Inconel 718 utilizes age hardening techniques to achieve impressive mechanical strength and hardness. This nickel-based superalloy demonstrates high tensile properties and exceptional yield strength, essential for turbine applications. Its unique precipitation-hardening process allows for enhanced performance at elevated temperatures, making it a preferred choice in the oil and gas industry. The alloy’s ability to maintain its properties under stress further solidifies its role in aerospace applications.
Industrial Applications of Inconel 718
Aerospace
Inconel 718 is a high-strength, corrosion-resistant nickel-chromium alloy ideal for aerospace applications. Its ability to withstand extreme temperatures and mechanical stress makes it perfect for jet engines, turbine components, and structural parts, ensuring safety and performance in demanding environments.
Oil and Gas Sector
The Oil and Gas Sector relies on advanced materials like Inconel 718 for high-performance applications. This nickel-chromium alloy is essential in extreme environments, offering exceptional strength and corrosion resistance. Its durability ensures safety and efficiency in drilling, production, and refining processes.
Power Generation
Inconel 718 is a high-strength, corrosion-resistant alloy widely used in power generation applications. Its excellent mechanical properties at elevated temperatures make it ideal for gas turbine components, nuclear reactors, and other critical systems. The alloy’s durability ensures reliability and efficiency in energy production.
What Our Clients Say
Our team has consistently relied on Inconel 718 for its exceptional mechanical properties. The tensile properties of Inconel 718, as detailed in the AMS 5662 data sheet, have proven vital in our cryogenic applications. This nickel alloy 718 offers remarkable impact strength and fatigue strength, making it the go-to choice for our demanding projects.
John Smith
Materials Engineer
Utilizing Inconel 718 superalloy has significantly improved our components’ performance. The nominal composition and creep rupture properties of this Inconel alloy ensure reliability under high-stress conditions. The behavior of Inconel 718 in harsh environments is unmatched, confirming its status as a leading nickel-based alloy in aerospace applications.
Emily Johnson
Aerospace Specialist
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Frequently Asked Questions
What is Inconel 718 alloy?
Inconel 718 alloy is a nickel-based super alloy known for its high mechanical strength and excellent corrosion resistance. Its chemical composition includes nickel, chromium, and molybdenum, which contribute to its durability in extreme environments.
What are the mechanical properties of Inconel 718?
The mechanical properties of Inconel 718 include high yield strength and tensile strength, making it suitable for demanding applications such as aerospace. Additionally, it exhibits good creep-rupture properties at elevated temperatures.
How does Inconel 718 perform at elevated temperatures?
Inconel 718 maintains its mechanical strength and resistance to oxidation at high temperatures, which makes it a popular choice for jet engine materials. Its melting point is also relatively high, allowing it to withstand extreme thermal conditions.
What are the applications of Inconel 718?
Inconel 718 is widely used in aerospace applications, including turbine engines and oil and gas industries. Its properties make it ideal for components exposed to high temperatures and corrosive environments.
What is the price of Inconel 718?
The price of Inconel 718 can vary based on market conditions and the form purchased, such as sheets, bars, or custom shapes. It’s advisable to check with suppliers for current pricing and availability.
How is Inconel 718 welded?
Welding Inconel 718 requires specific techniques to preserve its mechanical properties, often utilizing filler materials that match the alloy’s composition. Proper heat treatment is also essential to avoid issues like cracking.
What is the corrosion resistance of Inconel 718?
Inconel 718 exhibits excellent corrosion and oxidation resistance, which is vital for applications in harsh environments. This makes it suitable for use in chemical processing and marine applications.
Can Inconel 718 be additively manufactured?
Yes, additively manufactured Inconel 718 is gaining popularity due to its ability to create complex geometries. This process allows for the optimization of material usage while maintaining the high mechanical strength of the alloy.
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