718 (AMS 5663)

Alloy 718 (AMS 5663) is bar that is already aged (precipitation hardened). As supplied, this material provides high tensile strength and hardness compared to 718 in the annealed condition. Machining aged 718 is generally more difficult than machining annealed material.  The benefit is that once machining is completed the part is complete. Avoiding post machining heat treatment has several benefits since it eliminates the issue of dimensional change during aging. It also provides significant logistical advantages.


718 (AMS 5663) Round Bar

Common Trade Names

Alloy 718, Inconel® 718, Nickel 718


  • Aged to final heat treat condition
  • Good mechanical properties: tensile, fatigue and creep-rupture
  • Weldable
  • Oxidation resistant throughout its useful temperature range


  • Gas turbine engine parts
  • Liquid fuel rocket motor components
  • Firearms production
  • Springs, fasteners