DENSITY
8 kg/m³
MELTING POINT
1,260°C
TENSILE STRENGTH
1,240 MPa
MAX SERVICE TEMP
700°C
Inconel 718 is a superalloy used in aerospace applications. Melting point: 1,260 °C. Tensile strength: 1,240 MPa.
ABOUT INCONEL 718
Inconel 718 is a precipitation-hardened nickel-chromium superalloy widely used in jet engines and rocket motors. It offers exceptional strength at temperatures up to 700°C and outstanding corrosion resistance. The alloy is readily weldable and maintains excellent mechanical properties in cryogenic environments.
CHEMICAL COMPOSITION
Ni 50-55%, Cr 17-21%, Fe bal, Nb 4.75-5.5%, Mo 2.8-3.3%, Ti 0.65-1.15%, Al 0.2-0.8%
ROCKET & SPACECRAFT APPLICATIONS
●Rocket engine turbopumps
●Gas turbine discs and blades
●Cryogenic tankage
●Thrust chambers
●Exhaust systems
MANUFACTURING PROPERTIES
CORROSION RESISTANCE
Excellent
WELDABILITY
Good
MACHINABILITY
Moderate
COST RATING
High
MECHANICAL PROPERTIES
| DENSITY | 8 kg/m³ |
| TENSILE STRENGTH | 1,240 MPa |
| YIELD STRENGTH | 1,036 MPa |
| STRENGTH-TO-WEIGHT | 151404.2 kN·m/kg |
THERMAL PROPERTIES
| MELTING POINT | 1,260 °C |
| MAX SERVICE TEMPERATURE | 700 °C |
| THERMAL CONDUCTIVITY | 11.4 W/m·K |
| THERMAL EXPANSION | 13.0 µm/m·K |
COMPLETE SPECIFICATIONS
| CATEGORY | Superalloy |
| DESIGNATIONS | UNS N07718, AMS 5662, AMS 5663 |
| MANUFACTURER | Special Metals Corporation |
| DENSITY | 8 kg/m³ |
| TENSILE STRENGTH | 1,240 MPa |
| YIELD STRENGTH | 1,036 MPa |
| MELTING POINT | 1,260 °C |
| MAX SERVICE TEMP | 700 °C |
| THERMAL CONDUCTIVITY | 11.4 W/m·K |
| THERMAL EXPANSION | 13.0 µm/m·K |
| CORROSION RESISTANCE | Excellent |
| WELDABILITY | Good |
| MACHINABILITY | Moderate |
| COST RATING | High |
🛸 RELATED SPACECRAFT SYSTEMS
