Technical center

Alloy 718 (UNS N07718, W Nr 2.4668) is an austenitic nickel-based superalloy. Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF. Alloy 718 is used in applications that require high strength such as parts for jet engines and high speed airframe parts such as wheels, buckets, spacers and high temperature bolts and fasteners.

Chemical Composition 

Weight %

C

Mn

P

S

Si

Cr

Ni

Mo

Cb

Ta

Ti

Al

Co

B

Cu

Fe

Alloy 718

0.08

0.35

0.015

0.015

0.35

17-21

50-55

2.8-3.30

4.75-5.50

0.05

0.65-1.15

0.20-0.80

1

0.006

0.3

Rem

AMS 5662

Material

Condition

Tensile Strength Ksi

Yield Strength Ksi

Elongation (%)

Hardness

AMS 5589 Tube

Solution Annealed

155

95

30


AMS 5589 Tube

Solution Annealed and Aging

185

150

12

≥36 HRC

(1700°F-1850°F Solution Anneal)

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