High-performance alloy material for industrial engineering and critical application conditions.
Scope of supply for Aviation Group
Forgings, round rods, steel plates, rings, seamless pipes, steel plates/steel belts, capillaries, wire welding materials, welcome to inquire!
1. Inconel718 material introduction
Inconel718 alloy is precipitation-hardened nickel-iron-chromium alloy containing niobium and molybdenum. It maintains high strength, good toughness and corrosion resistance at temperatures below 650°C, and can be supplied in solid solution treated or precipitation-hardened condition.
2. Chemical composition of Inconel718
| alloy | % | Ni | Cr | Fe | C | Mn | Si | Mo | Cu | Co | Al | Ti | Nb | B | P | S |
| Inconel718 | Minimum value | 50 | 17 | Bal | – | – | – | 2.8 | – | – | 0.2 | 0.65 | 4.75 | – | – | – |
| Maximum value | 55 | 21 | 0.08 | 0.35 | 0.35 | 3.3 | 0.3 | 1.0 | 0.8 | 1.15 | 5.50 | 0.006 | 0.010 | 0.010 |
3. Physical properties of Inconel718
| density | 8.24 g/cm³ | |||
| Melting point | 1260-1320 ℃ | |||
| Alloy status | Tensile strength Rm N/mm² | Yield strength Rp0.2 N/mm² | Elongation A5 % | Brinell hardness HB |
| Solid solution treatment | 965 | 550 | 30 | ≤363 |
4. Inconel718 material characteristics
5. Inconel718 Metallographic Structure
GH4169 (Inconel718) possesses austenite matrix. Precipitated γ phase after aging hardening provides superior mechanical properties, while grain boundary δ phase formed during heat treatment delivers optimal ductility.
6. Inconel718 corrosion resistance
Inconel718 features outstanding resistance to stress corrosion cracking and pitting corrosion under both high and low temperature conditions, with reliable high-temperature oxidation resistance.
7. Application areas
Thanks to its high-temperature strength, superior corrosion resistance and easy processing performance at 700°C, it is widely adopted for high-standard service scenarios.
