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Inconel 718

Inconel 718 precipitation-enhanced nickel-based superalloy
The alloy has good comprehensive properties in the temperature range ℃-253~700, and the yield strength below 650 is the first in the deformed superalloy, and it has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, as well as good processing performance and good welding performance. Able to manufacture parts of various shapes and complex shapes, it has been widely used in aerospace, nuclear energy, petroleum industry and extrusion mould in the above temperature range.
Inconel 718 common number corresponding

Category

General name

Number of German marks

Unified Digital Number Number Number

Ni-Cr-Fe

Inconel 718(Ni54Cr18.5Mo3.1Fe18.5)

2.4668

N07718



Inconel 718 other brands corresponding

Name

GB of China

ASTM of the United States

 DIN Germany

British BS

AFNOR France

New brand

Old brand

Inconel 718

GH4169

GH4169

UNS N07718

W.Nr.2.4668(NiCr19Fe19Nb5Mo3)

NA 51

NC19FeNb



Inconel 718 physical properties:

 Density

 Melting point

 Thermal conductivity

 Specific heat capacity

 Elastic modulus

 Shear modulus

 resistivity

Poisson's ratio

 Line expansion coefficient

g/cm3

λ/(W/m•℃)

J/kg•℃

GPa

GPa

μΩ•m

a/10-6℃-1

8.24

1260

14.7(100℃)

435

199,9

77,2

1.15

0.3

11.8(20~100℃)



Inconel 718 chemical composition

Licence

UNS No.

Chemical element%

C

Mn

Si

Cu

Mo

Fe

Ni

Cr

Inconel 718

...

Max

0.08

0.35

0.35

0.3

2.8-3.3

Allowance

50-55

17-21



Inconel 718 corrosion properties

Medium

Inconel 718The content of nickel is much higher than that of stainless steel, so the corrosion resistance of alkali sulfide is better than that of stainless steel, and the corrosion resistance of high temperature is better. The corrosion resistance of Ni-Fe alloy is better than that of Ni in oxidizing environment. Because of the high nickel content, it also has good corrosion resistance in reducing environment. good corrosion resistance in high temperature corrosive media.