Inconel alloys have established themselves as indispensable materials in the realm of high-performance metallurgy because of their exceptional properties in demanding environments. Among the various grades of Inconel, Inconel 600 and Inconel 718 stand out for their unique characteristics and wide range of applications. This article delves into the technical difference between Inconel 600 and Inconel 718, highlighting their chemical compositions, mechanical properties, and areas of use.
What’s the difference between Inconel 600 and Inconel 718?
The Difference between Inconel 600 and Inconel 718 – 1. Chemical Composition
The fundamental difference between Inconel 600 and Inconel 718 lies in their chemical compositions. Inconel 600 is primarily composed of Nickel (Ni), Chromium (Cr), and Iron (Fe), with small amounts of other elements like Carbon (C), Silicon (Si), Manganese (Mn), Copper (Cu), Sulfur (S), and Aluminum (Al). The Ni-Cr-Fe matrix provides excellent corrosion resistance, especially in oxidizing and reducing environments.
On the other hand, Inconel 718 boasts a more complex composition that includes significant amounts of Nickel, Chromium, Iron, and additional elements like Cobalt (Co), Molybdenum (Mo), Titanium (Ti), Aluminum (Al), and Carbon (C). The addition of Cobalt and Molybdenum enhances the alloy’s high-temperature strength and creep resistance, while Titanium and Aluminum are key components of the gamma prime (γ’) phase, a strengthening precipitate that contributes to the alloy’s superior mechanical properties.
The Difference between Inconel 600 and Inconel 718 – 2. Mechanical Properties
The mechanical properties of Inconel 600 and Inconel 718 differ significantly due to their distinct chemical compositions. Inconel 600 exhibits excellent oxidation resistance and good resistance to chloride-ion stress-corrosion cracking. It maintains good ductility and toughness at both room and elevated temperatures, making it suitable for applications that require good formability and weldability.
Inconel 718, on the other hand, is renowned for its outstanding high-temperature strength and creep resistance. Its gamma prime (γ’) phase provides substantial strengthening, allowing it to retain its mechanical properties at temperatures up to 1300°F (704°C). Additionally, Inconel 718 has superior fatigue properties and good weldability, making it a preferred choice for applications involving high stresses and temperatures.
The Difference between Inconel 600 and Inconel 718 – 3. Applications
The diverse applications of Inconel 600 and Inconel 718 reflect their unique mechanical and chemical properties. Inconel 600 is widely used in the chemical processing industry, where it is exposed to harsh chemicals and corrosive environments. It is also employed in the aerospace and marine sectors due to its good resistance to oxidation and seawater corrosion.
Inconel 718, on the other hand, finds extensive application in the aerospace industry, particularly in the manufacture of turbine disks, shafts, and other high-temperature components. Its superior high-temperature strength and creep resistance ensure reliable performance in engines operating at extreme temperatures. Inconel 718 is also used in the oil and gas industry, where its corrosion resistance and high-temperature strength are crucial for downhole components.
Conclusion
In summary, Inconel 600 and Inconel 718 represent two distinct grades of Inconel alloys, each with unique chemical compositions, mechanical properties, and applications. Inconel 600 excels in corrosion resistance and formability, making it suitable for chemical processing and marine applications. Inconel 718, on the other hand, boasts exceptional high-temperature strength and creep resistance, making it a preferred choice for aerospace and oil and gas applications.
Thank you for reading our article and we hope it can help you to have a better understanding of the difference between Inconel 600 and Inconel 718. If you are looking for Inconel 600 and Inconel 718 suppliers and manufacturers online now, we would advise you to visit Huaxiao Alloy.
As a leading supplier of Inconel alloys from Shanghai China, Huaxiao Alloy offers customers high-quality Inconel 600 and Inconel 718 at a very competitive price.
