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.
Bottom mesh decking
Forkguides
Bottom steel plate
Bottom mesh decking
Forkguides
Bottom steel plate
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 |
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New brand |
Old brand |
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|
Inconel 718 |
GH4169 |
GH4169 |
UNS N07718 |
W.Nr.2.4668(NiCr19Fe19Nb5Mo3) |
NA 51 |
NC19FeNb |
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Inconel 718 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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|
8.24 |
1260 |
14.7(100℃) |
435 |
199,9 |
77,2 |
1.15 |
0.3 |
11.8(20~100℃) |
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|
1320 |
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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 718 The 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. |