Inconel 718 NACE

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%

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