Inconel 718 is a nickel based high-temperature alloy that has been widely used in aviation, aerospace, petrochemical and other fields due to its excellent high-temperature resistance, corrosion resistance, and high strength. This article will introduce the chemical composition of Inconel 718.
The chemical composition of Inconel 718 mainly includes elements such as nickel, chromium, molybdenum, iron, cobalt, copper, titanium, aluminum, and carbon. Among them, nickel is the main component of Inconel 718, accounting for approximately 50% -55% of the total weight. Secondly, chromium accounts for about 17% -21%, while the content of other elements is relatively small, but it also has a significant impact on the properties of the alloy.
The following is the chemical composition and content range of Inconel 718:
Nickel (Ni): 50.0% -55.0%
Chromium (Cr): 17.0% -21.0%
Molybdenum (Mo): 2.8% -3.3%
Iron (Fe): surplus
Cobalt (Co): 1.0% -1.5%
Copper (Cu): 0.3% -0.8%
Titanium (Ti): 4.75% -5.5%
Aluminum (Al): 0.65% -1.15%
Carbon (C): 0.08% maximum
Manganese (Mn): 0.35% maximum
Silicon (Si): 0.35% maximum
Phosphorus (P): 0.015% maximum
Sulfur (S): 0.015% maximum
(Nb)+tantalum (Ta): 4.75% -5.5%
The content of the above ingredients can be adjusted according to application requirements to adapt to different usage environments and requirements.
