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Inconel X750

Inconel X750(UNSNO7750)
the alloy is mainly a nickel-based superalloy with aging strengthening by γ'[Ni3(al, ti, nb)] phase. it has good corrosion resistance and oxidation performance below 980℃, high strength below 800℃, good relaxation resistance below 540℃, and good forming and welding properties, he alloy is mainly used in the manufacture of aeroengine ring parts, structural parts and bolts that work below 800℃ and require high strength corrosion resistant parts, flat springs and spiral springs with moderate or low stress working below 540 and requiring relaxation resistance. It can also be used to manufacture parts such as turbine blades.


Inconel X750 common number corresponding

Category

General name

Number of German marks

Unified Digital Number Number Number

Ni-Cr-Fe

Inconel X750(Ni73Cr15Fe6.8)

2.4669

...



Inconel X750 other brands corresponding

Name

GB of China

ASTM of the United States

DIN Germany

AFNOR France

New brand

Old brand

Inconel X-750

GH4145

GH4145

UNS N07750

W.Nr.2.4669(NiCr15Fe7TiAl)

NC15FeTNbA



Inconel X750 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

8.25

1395

14.7(100℃)

430

214

...

1.22

...

13.1(20~100℃



Inconel X750 chemical composition

Licence

Chemical element%

C

Mn

Si

P

S

Cu

Fe

Ni

Cr

Cb(Nb)

Al

Ti

Inconel X750

Max

0.08

1.00

0.50

0.015

0.01

0.50

5.00~9.00

≥70.0

14.0~17.0

0.70~1.20

0.40~1.00

2.25~2.75



Inconel X750 heat treatment requirements

Materials

Heat treatment

Materials

Heat treatment

Inconel X750

solid solution heat treatment system 980℃±15℃, air cooling.

Inconel X750

annealing :955~1010℃, water cooled. stress elimination annealing :885℃±15℃,24 air cooling.



InconelX750 corrosion properties

Medium

InconelX750 the nickel content in the alloy is much higher than that of stainless steel, 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.very suitable for 650℃high temperature.