INCONEL® Alloy 718

  • N07718
  • 2.4668

Key properties

(in annealed condition)
Tensile strength: 150.00–150.00
Yield strength: 120.00–140.00
Elongation: 20.00–20.00%
Hardness: 30.00–40.00

Composition

Ni+Co

50.00-55.00%

Cr

17.00-21.00%

Nb+Ta

4.75-5.50%

Mo

2.80-3.30%

Ti

0.65-1.15%

Al

0.20-0.80%

Co

0.00-1.00% max

C

0.00-0.08% max

Mn

0.00-0.35% max

S

0.00-0.35% max

P

0.00-0.02% max

S

0.00-0.02% max

B

0.00-0.01% max

Cu

0.00-0.30% max

Fe

Balance

INCONEL® alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F. The age-hardenable alloy can be readily fabricated, even into complex parts. Its welding characteristics, especially its resistance to postweld cracking, are outstanding. The ease and economy with which INCONEL alloy 718 can be fabricated, combined with good

tensile, fatigue, creep, and rupture strength, have resulted in its use in a wide range of applications. Examples of these are components for liquid fueled rockets, rings, casings and various formed sheet metal parts for aircraft and land-based gas turbine engines, and cryogenic tankage. It is also used for fasteners and instrumentation parts.