Description
Inconel 718 /UNS N07718
Inconel 718 Material grades and equivalents
Inconel 718 / GB GH4169 / UNS N07718 / SEW VDIUV W.Nr.2.4668 NiCr19Fe19Nb5Mo3 / BS NA 51/ AFNOR NC19FeNb
Inconel 718 Chemical composition:
% |
Ni |
Cr |
Fe |
Mo |
Nb |
Co |
C |
Mn |
Si |
S |
Cu |
Al |
Ti |
Min. |
50 |
17 |
balance |
2.8 |
4.75 |
0.2 |
0.7 |
||||||
Max. |
55 |
21 |
3.3 |
5.5 |
1 |
0.08 |
0.35 |
0.35 |
0.01 |
0.3 |
0.8 |
1.15 |
Inconel 718 Physical properties:
Density |
8.2 g/cm³ |
Melting point |
1260-1340 ℃ |
Inconel 718 Alloy minimum mechanical properties in the roomtemperature:
Alloy |
Tensile strength Rm N/mm² |
Yield strength R P0. 2N/mm² |
Elongation A 5 % |
Brinell hardness HB |
Solutiontreatment |
965 |
550 |
30 |
≤363 |
Inconel 718 Characteristic as below:
1.workability
2.High tensile strength,endurance strength,creep strength and rupture strength at 700℃.
3.High inoxidability at1000℃.
4.Steady mechanical performance in the low temperature.
5.Good welding performance.
Inconel 718 Metallurgical structure:
Inconel 718 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:
Inconel 718 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 700℃ 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
Specifications:
Sheet/Plate |
AMS 5599/AMS 5879/ASME SB-443 Gr.1/ASTM B670 |
Wire |
ASTM B670 |
Bar/Forging |
AMS 5666/ASME SB-446 Gr. 1/ASTMB-446 Gr. 1 |