718

Inconel 718 is a high strength nickel base superalloy used for cryogenic temperatures up to long term service at 1200°F. The alloy is readily fabricated and may be welded in either the annealed or precipitation (age) hardened condition. Anneal 1700 -1850°F, air cool or faster. Age 1325°F 8 hours, furnace cool to hold at 1150°F, for a total aging time of 18 hours, air cool. Alloy 718 will show a contraction of 0.0008 inch/inch after precipitation hardening. 

Inventory

718 Plate, 718 Round Bar, 718 Sheet, 718 Weld Wire

Common Trade Names

Alloy 718, Inconel® 718, Nickel 718

Features

  • Good mechanical properties: tensile, fatigue and creep-rupture
  • Excellent welding characteristics, resistant to postweld age cracking
  • Oxidation resistant throughout its useful temperature range

Applications

  • Gas turbine engine parts
  • Liquid fuel rocket motor components
  • Springs, fasteners
  • Cryogenic tanks