General Description
Inconel 718 NACE has an adjusted composition which allows the material to have a different range of characteristics. Inconel 718 NACE has a tighter element content range in addition to adjusted annealing and aging temperatures which produces a product with lower mechanicals, larger grain and increase toughness. The tensile and yield are lower as well as the hardness which is lower than that of the AMS specification.
Inconel 718 NACE is commonly used in oil and gas industry for various applications. These severe environment wells have significant concentrations of H2S, CO2, chlorides and high bottom hole temperatures. The largest use is for downhole tools such as subsurface safety valves, packers, flow control devices and other tools. These alloys are also used for wellhead components and valve bodies.
Chemical Composition
| Grade | Ni% | Cr% | Nb+Ta% | Mo% | Ti% | Al% | C% | Co% | Mn% | Si% |
|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 718 NACE | 50.0-55.0 | 17.0-21.0 | 4.87-5.2 | 2.8-3.3 | 0.8-1.15 | 0.4-0.6 | Max 0.045 | Max 1.0 | Max 0.35 | Max 0.35 |
P% |
S% |
B% |
Cu% |
Pb% |
Se% |
Bi% |
Ca% |
Mg% |
Fe% |
|
| Max 0.01 | Max 0.01 | Max 0.006 | Max 0.23 | Max 0.001 | Max 0.0005 | Max 0.00005 | Max 0.003 | Max 0.006 | Bal. |
Designations
UNS N07718
Werkstoff Nr. 2.4668
Specifications
NACE MR0175 MR0103
API 6A718
Physical Properties
Density：8.2g/cm3
Melting Point: 1180°C-1340 °C
Mechanical Properties
Solution Annealed & Aged
Tensile: Min 1034 MPa
Yiled: Min 827 MPa
Elongation: Min 20%