Standard Grade

Trade Name

UNS No.

DIN

BS

JIS

French Specs

INCONEL 718

UNS N07718

WS 2.4668

-

-

-

Specification

SAE AMS 5589, SAE AMS 5590, ASME Code Case N-253, DIN 17751

Typical use

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.

Weight Formula

Average Wall: (OD-WT) x WT x 0,0260 = Kg/m (all sizes in mm)
Minimum Wall: (OD-WT) x WT x 0,0270 = Kg/m (all sizes in mm)

Chemical Composition Limits

Weight %

C

Mn

P

S

Si

Cr

Ni

Mo

Cb

Ta

Ti

Al

Co

B

Cu

Fe

Alloy 718
AMS 5662

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

1.00

0.006

0.30

Rem

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)