Inconel 718 alloy is a precipitation-hardening nickel-chromium-iron alloy containing niobium and molybdenum, with high strength below 650°C, good toughness and corrosion resistance in both high and low temperature environments. Its state can be solid solution treatment or precipitation hardening state.
Inconel 718 Superalloy Forgings Characteristics
●Easy processability
●High tensile strength, fatigue strength, creep strength and fracture strength at 700°C
●High oxidation resistance at 1000°C
●Stable chemical properties at low temperatures
●Good welding properties
Inconel 718 Application Areas
Due to its high temperature strength and excellent corrosion resistance and easy processability at 700°C, it can be widely used in various demanding applications. ●Turbine ●Liquid fuel rocket
●Cryogenic engineering
●Acidic environment
●Nuclear engineering
Chemical composition
Inconel 718 Similar Grades
GH4169, GH169 (China), NC19FeNb (France), NiCr19Fe19Nb5, Mo3 (Germany), NA 51 (UK) Inconel718, UNS NO7718 (USA) NiCr19Nb5Mo3 (ISO)
| Inconel 718 | Ni | Cr | Fe | C | Mn | Si | Mo | Cu |
| Min. | 50 | 17 | 2.8 | |||||
| Max. | 55 | 21 | Remainder | 0.08 | 0.35 | 0.35 | 3.3 | 0.3 |
| Inconel 718 | Co | Al | Ti | Nb | B | P | S | |
| Min. | 0.2 | 0.65 | 4.75 | |||||
| Max. | 1.0 | 0.8 | 1.15 | 5.5 | 0.006 | 0.01 | 0.01 |
Physical Properties
Density
Density ρ=8.24g/cm3
Melting temperature range
Melting temperature range 1260~1320℃