Inconel 718 (also called AMS 5663) is a special metal that cater requirements like high temperature, corrosion, creep and thermal shock resistance, etc. This alloy is most suitable for aerospace industry due to its extreme hardness and favourable properties and characteristics.
AMS 5663 is the true super nickel based alloy considered with the ability to be used permanently above 600°C. Its Young's modulus is almost double than of Ti6Al4V and close to that of an unalloyed carbon steel. This superalloy has better rupture, creep strength, high resistance to fatigue and corrosion. It can maintain strength, toughness and corrosion resistance for long period of time at higher temperatures. About 50% of aircraft turbojet engines’ weight is made with AMS 5663, being the main component for discs, blades and casing of high pressure section of discs and compressor as well as some blades of turbine section. It also used in some applications that work in cryogenic environments and rocket engines as it has enough toughness at low temperature. AMS 5663 (Inconel 718) contains iron in enough quantity that lowers its cost per kilogram while giving it precipitation hardening effect. Low mobility of iron provides the prime strengthening phase (γ’’) a slow precipitation kinetics that highly decreases susceptibility to post-weld cracking. To overcome the low joinability of this materials’ class that mostly susceptible to crevices (microstructural segregation of alloying components in extreme heat-affected zone of welds), Inconel 718 is designed. Alloying elements have made AMS 5663 an extreme corrosion resistant up to 1000°C / 1832°F. For example, this alloy is helpful in fighting with chloride stress corrosion cracking and protects from many types of corrosion in many inorganic and organic oxidizing compounds, in wide range of acidity and alkalinity. Chromium provides this alloy the great power to handle the effects from oxidizing media and sulfur compounds while Molybdenum improves its resistance to pitting corrosion. Conclusion - Choosing Inconel 718 for your aerospace application will be a nice decision. To ensure that you will get only top quality metal, choose FlightMetals for best quality nickel metal AMS 5663 at best price that you would expect from a premier specialty metal supplier. Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |