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Inconel 718

Inconel 718 Bolts Nuts

Overview of Inconel 718

Inconel 718, also known as UNS N07718 or AMS5596,AMS5662, is a high-performance nickel-based superalloy.
The alloy was developed by the American International Nickel Corporation (Inco) in the 1950s, because of its excellent mechanical properties, corrosion resistance and high temperature stability, in aerospace, energy, chemical and other fields are widely used.

Inconel 718 Fasteners

Aerospace: Used as a key component of aeroengines and gas turbines, such as turbine blades, turbine discs and rotors.
Energy: Various elastic elements used in reactor pressure vessels, control rod drive mechanisms and nuclear fuel cycle systems for nuclear power plants.
Chemical: In the petroleum and chemical industry, it is used to manufacture a variety of high temperature and corrosion resistant equipment and pipelines.
Cryogenic engineering: Used for the manufacture of low temperature storage containers such as liquid nitrogen and liquid hydrogen.
Mold manufacturing: Used to manufacture high-temperature molds, withstand high temperature and high pressure working environment.

Product form Standard
Rods and wires ASTM B166
Sheet, plate and strip ASTM B168、ASTM B906
Seamless tube and pipe ASTM B167、ASTM B829
Electric welded pipe ASTM B472
Electric welded pipe ASTM B564

Inconel 718 Chemical element composition content (%)

Content C Si Mn P S Cr Ni Cu Mo Ti B Co Al Cb * More
Minimum - - - - - 17 50 - 2.8 0.65 - - 0.2 4.75 Fe:Balance
Maximum 0.08 0.35 0.35 0.015 0.015 21 55 0.3 3.3 1.15 0.006 1 0.8 5.5  

Inconel 718 thermal performance

(1) Inconel 718 melting temperature range:1260 – 1320℃.
(2) Inconel 718 thermal conductivity:

θ/℃ 11 100 200 300 400 500 600 700 800 900 1000
λ/(W/(m·℃)) 13.4 14.7 15.9 17.8 18.3 19.6 21.2 22.8 23.6 7.6 30.4
Inconel 718 specific heat capacity
θ/℃ 300 400 500 600 700 800 900 1000
c/(J/(Kg·℃)) 481.4 493.9 514.8 539 573.4 615.4 657.2 707.4
Inconel 718 coefficient of linear expansion
θ/℃ 20-100 20-200 20-300 20-400 20-500 20-600 20-700 20-800 20-900 20-1000
α/10-6-1 11.8 13 13.5 14.1 14.4 14.8 15.4 17 18.4 18.7