Materials Highlight: Inconel

Inconel is a family of austenitic nickel-chromium super alloys and a registered trademark of Special Metals Corporation. They’re oxidized and corrosive resistant materials. Because of this feature, Inconel is suited for structural integrity in high temperature atmospheres due to a thick, stable passivating oxide layer which is formed when it’s is heated. This layer protects Inconel’s surface making it resistant to heat.

This results in its usefulness in high temperature applications where aluminum and steel would falter to deformation. Inconel also has several material properties that do not easily succumb to caustic corrosion or corrosion caused by high water purity.

Inconel is usually in environments outside the general everyday norm. It’s frequently used in the oil and gas, chemical, and aerospace industries. It’s common in gas turbine blades, seals and combustors. It can also be used in chemical processing, steam generators in nuclear pressurized water reactors and racing exhaust systems such as Formula One and NASCAR. This type of versatility throughout different industries shows its value among different super alloys.

Iconel and Specialty Fastener Applications

Inconel is an alloy that Elgin Fastener Group has come to utilize in a variety of different manners and applications. Because of its combination of corrosion strength and outstanding weldability, this raw material has proven to be an invaluable part of the fastener production process. Elgin has a complete list of technical specifications for its nine different Inconel materials and common applications that they are proven to work the best in. Elgin’s Inconel materials stand apart from the rest.

For fasteners, each Inconel property has its own specific use and practicality. For example:

  • Inconel 600’s high nickel content gives the alloy resistance to corrosion by many organic and inorganic compounds and almost immune to chloride-ion stress corrosion cracking. It can be used from temperatures as low as cryogenic to above 2000 degrees F.
  • Inconel 625 is applicable from temperatures of cryogenic to 1800 degrees F and is an excellent choice for seawater applications.
  • Inconel 718 has welding characteristics that makes it resistant to post-weld cracking and has good tensile, creep and rupture strength. This particular material can be applied in temperatures between -423 degrees to 1300 degrees F.

Overall, the picture is clear: if you have a specific fastener need, Elgin’s inventory is large enough to solve the problem.

At Elgin Fasteners Group, we use Inconel and its multiple alloy materials to create specialty fasteners. We have the ability to work with all these different types of Inconel and provide quality, cost-effective solutions.

For more information:

  • Download our products and capabilities brochure.
  • For more information on Inconel and specialty fasteners, visit our Material and Properties page to find the right material for your needs.
  • Or contact us and a representative will follow up with you shortly to address any question on your mind.