Inconel 718 (UNS N07718): Precipitation-Hardening Aerospace Superalloy
AMS 5662 · Published: 2026-06-03 · Updated: July 2026
Inconel 718 is the most widely used nickel-based superalloy — accounting for approximately 35% of all superalloy production by weight. It achieves exceptional strength through precipitation of gamma-double-prime (Ni₃Nb) phases during aging,...
Inconel 718 ist der meiste widely used nickel-based superalloy — accounting für approximately 35% von alle superalloy production durch weight. Es achieves exceptional strength durch precipitation von gamma-double-prime (Ni₃Nb) phases während aging, maintaining useful strength zu 650°C. Es ist der dominant material für jet motor rotating components (discs, shafts, blades) und hoch-temperature fasteners.
Quick Facts
| Kategorie | Nickel Alloy |
| Norm | AMS 5662 |
| Density | 8.19 g/cm³ |
| Yield Strength | 1,034 MPa |
| Tensile Strength | 1,275 MPa |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN 2.4668 | Compare |
| NiCr19NbMo | Compare |
| JIS NCF718 | Compare |
| GB GH4169 | Compare |
Verwandt Materials
🧮 Material Weight Calculator
Calculate the weight based on this material's density: 8.19 g/cm³
Frequently Asked Questions
Was makes 718 der meiste produced superalloy?
718 combines (1) exceptional strength bei temperature, (2) gut weldability compared zu andere superalloys, (3) relatively slow aging response allowing thick-abschnitt heat treatment ohne cracking, und (4) widespread availability due zu decades von aerospace qualification. Nein andere superalloy matches dies combination.
References & International Standards
- ASTM International. Norm Specifications für Stahl & Metal Alloys. astm.org
- International Organization für Standardization (ISO). Metallic Materials — Cross-Referenz Database. iso.org
- American Iron und Stahl Institute (AISI). Stahl Güte Designations & Equivalents. steel.org
- European Committee für Standardization (CEN). EN Stahl Standards & Numbering System. cencenelec.eu