Inconel 718 Powder Description
Inconel 718 (Alloy 718, UNS N07718) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F. This age-hardenable alloy can be readily fabricated, even into complex parts. Its welding characteristics, especially its resistance to post-weld cracking, are outstanding.
Good fabricability combined with tensile, fatigue, creep, and rupture strength at temperatures from cryogenic to over 1000°F has led to its application in various forms. Examples of these are liquid-fueled rocket components, rings and casings, and various formed sheet metal parts for aircraft and land-based gas turbine engines and cryogenic tankage.
Additive manufacturing, more commonly known as 3D printing, also relies on the usage of Inconel 718 Powder.
Inconel 718 Powder Specifications
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Product Name
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Inconel 718 powder
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Alloy Grade
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Inconel 718
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Related Grades
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Nickel Alloy In718, CL100NB, B50TF202, B50A917
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Composition
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Cr 17-21
Mo 2.8-3.3
Ti 0.65-1.15
Al 0.2-0.8
Co 1 max
C 0.08 max
Ni 50-55
Nb 4.75-5.50
Mn 0.35 max
Si 0.35 max
P 0.015 max
S 0.015 max
B 0.006 max
Cu 0.3 max
Fe Bal1
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Size Grades
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-105+45micron
-53+15micron
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ASTM
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B537, B670
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AMS Specification
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5832, 5596
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Inconel 718 Powder Properties
- High-temperature strength: It possesses strength at high temperatures and is, hence, suitable for application in turbines, engines, and other high-temperature applications.
- Corrosion resistance: It has excellent oxidation and corrosion resistance, capable of resisting acidic and marine environments.
- Stable mechanical properties: It is suitable for application in environments from below zero to 700°C.
- Processing easiness: Normally, it is difficult to process nickel-based alloys. However, Inconel 718 alloy has good ductility and hence is suitable for 3D printing and similar processes.
- Age hardening: Its hardness and strength can be improved by heat treatment, which does not need to be complicated.
- Fatigue and corrosion resistance under stress: In high-stress and cyclic load environments, it is ideal.
Inconel 718 Powder Applications
Inconel 718 Powder plays an important role in additive manufacturing processes, better known as 3D printing. IN718 was first designed and introduced in the 1960s to overcome the poor weldability of superalloys. These days, IN718 is used intensively in gas turbines and aero engines for discs and frames. Due to the excellent weldability of IN718 and the similarity of the AM and welding processes, IN718 has been widely applied in metallic AM fields to understand the fundamentals of the AM processes.
Reference
Dunyong Deng: Additively Manufactured Inconel 718: Microstructures and Mechanical Properties. https://www.diva-portal.org/smash/get/diva2:1177201/FULLTEXT02.pdf
