Inconel 718

Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures. This nickel alloy is used from cryogenic temperatures up to long term service at 1200° F. One of the distinguishing features of Inconel 718’s composition is the addition of niobium to permit age hardening which allows annealing and welding without spontaneous hardening during heating and cooling.

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				Inconel 718(UNS N06600)
Grade	Chemical Composition(%)
Grade	%	Ni	Cr	Fe	Mo	Nb	Co	C	Mn	Si	S	Cu	Al	Ti
Inconel 718	Min	50	17	Balance	2.8	4.75	/	/	/	/	/	/	0.2	0.7
Inconel 718	Max	55	21	Balance	3.3	5.5	1	0.1	0.35	0.35	0.01	0.3	0.8	1.15
Physical properties	Density g/cm3 ：8.20				Melting point (℃): 1260-1340
Minimum mechnical value under room temperature	Condition		Test temperature		Tensile strength(Mpa) Rm N/mm2		Yield strength(Mpa) RP0.2N/mm2					A5%
Minimum mechnical value under room temperature	Solution annealed		Room temperature		965		550					30