Inconel 718 Round Bar

Inconel 718 is a nickel-chromium alloy that contains supplemental amounts of columbium, iron, molybdenum, aluminum, and titanium. Given this alloy's durability and ductility characteristics, it has a wide range of applications in a broad spectrum of industries. Common uses of nickel alloy 718 include deployment in gas turbines, subservice safety valves, aircraft engines, thrust reversers, and industrial fasteners.

Performance of Nickel Alloy 718

Nickel alloy 718 provides the following universal performance characteristics:

  • Good weldability & formability
  • High durability in environments with temperatures of up to 1300° F
  • Excellent oxidation resistance
  • Superior cryogenics properties

Specifically, alloy 718 effectively resists stress rupture and creep when exposed to temperatures as hot as 1300°F, and maintains corrosion resistance below the 1800° threshold. Moreover, its tensile strength and impact resistance remain intact at temperatures in the cryogenic range, making it particularly useful for aerospace applications.

Alloy 718 is classified as "age-hardenable," meaning that its resistance properties increase over time—especially with prolonged exposure to cold temperatures. Numerous AMS and NACE specification processes can be deployed to customize its application-specific performance characteristics. Additionally, heat treatments can be used to soften the alloy prior to welding, forming or machining. Its machinability rating is 12% of B-1112, and it has typical stock removal rates of 20 surface feet per minute with high-velocity tools and 80 surface feet per minute with carbide tools.

 

Chemical Composition Table

UNS: N07718 / TYPE: 718 

 AlBCCoCrCuFeMgNbNiPPbSSiTaTi
Min 0.4 0.0     17.0   6.6   4.9 50.0            
Max 0.6 0.006 0.045 1.0 21.0 0.15 19.3 0.35 5.2 55.0 0.01 0.0005 0.01 0.35 0.05 1.15

 

For questions about the availability of nickel alloy 718 for specific applications, or to request an estimate for a project requiring standard or customized 718 formulations, please contact a Ram Alloys professional today! 

Need more information? click here for a quote or call us at 713.466.1890 to speak with a Ram Alloys representative.