Inconel718 High Temperature Deformation Alloy Forging

Inconel 718

UNS	Trademark	W.Nr
N07718	Inconel718	2.4668

 
Inconel 718 Chemical composition
 

Alloy	%	Ni	Cr	Fe	Mo	Nb	Al	C	Mn	Si	S	Cu	Al	Ti	B
Inconel 718	Min.	50	17	balance	2.8	4.75	0.2						0.2	0.65
	Max.	55	21		3.3	5.5	0.6	0.08	0.35	0.35	0.015	0.30	0.8	1.15	0.006

 

Inconel 718 Physical properties
 

Density	8.24 g/cm³
Melting point	1260-1320 ºC

 

Inconel 718 Alloy minimum mechanical properties in the roomtemperature
 

Status	Tensile strength  Rm N/mm²	Yield strength  Rp 0. 2N/mm²	Elongation  As %	Brinell hardness HB
Solution treatment	965	550	30	≤363

 
 
718 Characteristic as below:
1.workability
2.High tensile strength,endurance strength,creep strength and rupture strength at 700ºC.
3.High inoxidability at1000ºC.
4.Steady mechanical performance in the low temperature.
5.Good welding performance.
 
Inconel 718 Metallurgical structure
718 alloy is Austenitic structure, precipitation hardening generate "γ" made it excellent mechanical performance. G rain boundary generate "δ" made it the best plasticity in the heat treatment.
 
Inconel 718 Corrosion resistance
718 alloy with extremely resistance to stress corrosion cracking and pitting ability in high temperature or low temperature environments, especially the inoxidability in the high temperature.

Inconel 718 Application field:
The elevated temperature strength, excellent corrosion resistance and workability at 700ºC properties made it use in a wide range of high requirement environments. 
1.Steam turbine
2.Liquid-fuel rocket 
3.Cryogenic engineering
4.Acid environment
5.Nuclear engineering