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 |
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New brand |
Old brand |
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|
Inconel X-750 |
GH4145 |
GH4145 |
UNS N07750 |
W.Nr.2.4669(NiCr15Fe7TiAl) |
NC15FeTNbA |
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Inconel X750 physical properties |
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|
Density |
Melting point |
Thermal conductivity |
Specific heat capacity |
Elastic modulus |
Shear modulus |
resistivity |
Poisson's ratio |
Line expansion coefficient |
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|
g/cm3 |
℃ |
λ/(W/m•℃) |
J/kg•℃ |
GPa |
GPa |
μΩ•m |
a/10-6℃-1 |
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|
8.25 |
1395 |
14.7(100℃) |
430 |
214 |
... |
1.22 |
... |
13.1(20~100℃ |
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|
1430 |
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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. |