LITERATURE
SPECIFICATIONS
UNS: N07718
W. NR.: 2.4668
ASTM: B 637, B 670
ASME: CASE 2222-1, SFA 5.14
AMS: 5596, 5662, 5663, 5832
GE: B50TF14, B50TF15
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
- Firearms production
- Liquid fuel rocket motor components
- Springs, fasteners
- Cryogenic tanks
COMMON TRADE NAMES
- Inconel® 718
- Alloy 718
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.
FORMS
MARKETS & INDUSTRIES
