Email Us

Inconel 718: A Superalloy with Lasting Relevance

Metal 3D printing has finally catapulted Inconel, the classic nickel-based heat-resistant alloy, into the 21st century. Inconel 718, the hardened version of Inconel 625, is the latest addition to our growing range of metals for Direct Metal Laser Sintering (DMLS). It is perfect for extreme environments and high temperatures where aluminum and steel would have a creep problem. This makes it ideal for the heavy and aerospace industries, for example in the production of turbine parts and jet engines.

Actually, the story of Inconel 718 begins with the jet engine. The alloy of nickel and chromium was first produced in the 1940s for the development of the Whittle jet engine, because it was just right for this application: strong, heat- and corrosion-resistant, and at the same time cost-effective and light. Tungsten was too heavy, copper melted at even moderate heat, and aluminum and steel were not strong and corrosion resistant enough. Without superalloys like Inconel, aerospace might not have seen such an extraordinary rise. Indeed, perhaps the jet age would never have happened.


Fast forward to this century: There are materials that have evolved from these first superalloys. Inconel 718 is the world's dominant superalloy, and for good reason. Its strength is based on its ability to build up a thick and stable passivating oxide layer at high temperatures up to +704°C, which protects the material from further attack. Inconel also has good tensile, fatigue, creep and fracture strength, making it a workhorse among superalloys.

Inconel is well suited to the production of jet engines and rocket engine components, but aerospace is not the only sector to benefit from this material. Heavy industry also derives benefits for machinery exposed to extreme environments. Gas turbine and instrumentation parts, power and process components, piping, valves and heat exchangers are just some of the applications for which Inconel 718 is suitable.


Machining Inconel 718 is notoriously difficult due to costly tooling, material loss and susceptibility to metallurgical defects. When using this material for fast 3d prints with DMLS, on the other hand, great results can be achieved, especially for intricate designs. With DMLS, the mechanical properties of Inconel 718 are maintained, and thanks to directional solidification, the values of cast and forged parts made from the alloy can even be surpassed with this process.

This means that Inconel 718, with its impressive history, continues to be on the road to success. We can look forward to seeing how the "workhorse" among the superalloys will shape the technology of the future.



High Strength

Minimum wall thickness: 1.00 mm; Minimum feature size 1.00 mm

Excellent high temperature strength and corrosion resistance

Minimum dimensions of raised details: 0.5 mm high and wide; 0.8 mm for text and images
Good tensile, fatigue, creep and breaking strengthMinimum dimensions of recessed details: 0.5 mm deep and 0.6 mm wide; 1.00 mm wide for text and images
 Max. Part size: 245 x 245 x 300 mm

Direct metal laser sintering

Direct Metal Laser Sintering (DMLS) at Richconn is an industrial 3D printing process for the Rapid Manufacturing of fully functional metal prototypes and production parts with a run time of 7 days or less. It uses materials that are generally recognized as casting or forging materials, equivalent or superior. DMLS is ideal when geometry or structure of a part cannot be achieved by other processes ( use honeycomb or lattice structures to save weight), and for medical implants.

Inconel 718 is just one of the DMLS materials available from Richconn. Complete list of DMLS materials:

# Aluminum
 # Inconel 718
 # Hot work tool steel
 # Stainless steel
 # Titanium

Related CNC Machining Services
Related News of CNC Machining
  • How to Switch Between 3D Printing and CNC Machining When Manufacturing Plastic Parts.How to Switch Between 3D Printing and CNC Machining When Manufacturing Plastic Parts.October 18, 2023Not so long ago, prototyping and low-volume parts manufacturing was a fairly costly and time-consuming process. You sent a paper drawing to the precision machine shop of your choice, briefly discussed the delivery date and price with the owner or shop manager, and waited. If it had to be done quickly, one paid overtime to get the parts sooner, but prototyping was still a test of patience. You got real parts, but at the cost of valuable production time and money.view
  • CNC Machine vs 3D Printer: A Comprehensive ComparisonCNC Machine vs 3D Printer: A Comprehensive ComparisonNovember 6, 2023​As the proud owner of Richconn, a CNC machining service provider, I understand the importance of choosing the right manufacturing technology for your production needs. The decision between CNC machines and 3D printers can be a daunting one, and that's why I'm here to provide you with a comprehensive comparison to help you make an informed choice.view
  • Exploring the Precision and Efficiency of CNC Tapping in MachiningExploring the Precision and Efficiency of CNC Tapping in MachiningNovember 22, 2023Precision in machining isn't just a goal; it's the essence that defines excellence. Within this realm, CNC tapping emerges as a beacon of accuracy, revolutionizing how threads are crafted and machines function. Let's delve deeper into this intricate world to uncover the precision and efficiency it offers.view
  • Unveiling Precision: Mastering Surface Profile for Engineering ExcellenceUnveiling Precision: Mastering Surface Profile for Engineering ExcellenceNovember 21, 2023​Engineering precision is more than a requirement; it's a commitment to excellence. Amidst the intricate world of engineering, understanding the nuances of surface profile becomes paramount.view
  • 4 Axis CNC Machining: The Definitive Guide 20234 Axis CNC Machining: The Definitive Guide 2023August 29, 2023CNC machining is a widely used manufacturing process that involves the use of computer-controlled machines to create precise and complex parts from various materials. CNC machines can operate on diffe...view
  • 7 Tips for Choosing a Right CNC Machine Manufacturer7 Tips for Choosing a Right CNC Machine ManufacturerSeptember 7, 2023Some companies seek a quality precision manufacturer with the best matching services. Nowadays, there are lots of CNC manufacturers to choose from. The problem is how to pick out the right CNC manufac...view
1212, Zehua Building, Intersection of Longhua Meilong Road and Donghuanyi Road, Songhe Community, Longhua Street, Longhua District, Shenzhen, GuangDong, China
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Visit our cookie policy to learn more.
Reject Accept