Sold as both Nickel Alloy 718 and Inconel 7l8, alloy 718 is a high strength nickel-chromium material. This age-harden alloy offers outstanding corrosion-resistance and exhibits characteristics that make it easy to work with for fabrication purposes. Other key properties of Nickel Alloy 718 and Inconel 7l8 are:
- Excellent relaxation resistance
- Can be fabricated into even the most complex parts
- Offers a wide temperature range -423°F(-253°C) to 1300°F(705°C)
- Outstanding tensile, fatigue, creep, and rupture strength
- Gamma Prime strengthened
- Excellent oxidation resistance up to 1800°F(980°C)
- Available in annealed temper, aged, cold worked, or cold worked and aged
Because of its unique array of properties, alloy 718 is popular with a number of different critical industries and applications including:
- Gas turbine components
- Cryogenic storage tanks
- Jet engines
- Liquid fueled rocket motors and components
- Fasteners and instrumentation parts
- Nuclear fuel element spacers
- Hot extrusion tooling
- Down hole shafting and strength bolting
Nickel Alloy 718 and Inconel 7l8 consists of over 50% nickel and of a number of different elements:
- Ni 52.5%
- Fe 18.5%
- Cr 19%
- Cb+Ta 5.13%
- Mo 3.05%
- Ti 0.9%
- Al .5%
- Co 1% max