Product Overview
The AeroCast-Ni718 Investment Turbine Blade is a high-precision, aerospace-grade turbine blade engineered for extreme thermal and mechanical loads. Manufactured via vacuum-inert-gas investment casting per AMS 5366 specifications, this 320mm-long component delivers exceptional dimensional accuracy, surface integrity, and microstructural homogeneity. Designed specifically for hot-section applications in gas turbine engines, it exemplifies the synergy of advanced metallurgy and precision custom forging & casting expertise. As an Inconel 718 turbine blade, it leverages the alloy’s outstanding strength retention, oxidation resistance, and creep resistance up to 700°C — making it ideal for next-generation aerospace turbine blades and mission-critical power generation systems.
Each AeroCast-Ni718 blade undergoes full traceability, NDT (including fluorescent penetrant inspection and X-ray), and certified heat treatment (solution annealing + double aging) to meet OEM airworthiness requirements. Its geometry integrates aerodynamic optimization, cooling channel fidelity, and robust root attachment features — all realized through proprietary ceramic shell mold technology and controlled solidification processes.
Key Features
- Precision investment casting per AMS 5366 with full material certification (MTR)
- Forged-and-cast hybrid process ensures superior grain flow and fatigue resistance
- Heat resistant to 700°C with sustained tensile strength >1,000 MPa at 650°C
- Integrated internal cooling passages with ±0.15 mm dimensional tolerance
- Surface finish Ra ≤ 1.6 µm as-cast; optional HIP + post-machining available
- Full lot traceability, NADCAP-accredited non-destructive testing included
Technical Specifications
| Parameter |
Value |
| Alloy |
Inconel 718 (AMS 5662 / UNS N07718) |
| Manufacturing Process |
Vacuum investment casting + hot isostatic pressing (HIP) |
| Length |
320 mm ±0.3 mm |
| Root Type |
Fir-tree dovetail (per GE/RR/SNECMA standards) |
| Hardness |
36–42 HRC (aged condition) |
| Tensile Strength (650°C) |
≥1,030 MPa |
| Yield Strength (650°C) |
≥725 MPa |
| Elongation (RT) |
≥20% (ASTM E8) |
| Max Operating Temp |
700°C continuous, 750°C intermittent |
| Surface Finish |
Ra ≤ 1.6 µm (as-cast); Ra ≤ 0.8 µm (machined option) |
| NDT Compliance |
ASTM E1417 Level 3, ASTM E192 |
| Certification |
AMS 5366, NADCAP HT & NDT, ISO 9001 & AS9100D |
Applications
This AeroCast-Ni718 turbine blade serves critical roles across high-value sectors: aerospace turbine blades for commercial jet engines (e.g., LEAP, GEnx), industrial gas turbines (IGTs), auxiliary power units (APUs), and advanced turbomachinery in defense and space propulsion. Its reliability under cyclic thermal stress makes it equally suited for concentrated solar power (CSP) turbines and hydrogen-fueled combustion systems — reinforcing its position among premium investment casting blades for extreme environments.
EN
