Product Overview
The AeroCast-Co40 High-Strength Turbine Blade is a precision-engineered, investment-cast gas turbine blade designed for extreme thermal and mechanical loads in aerospace and power generation applications. Measuring 410mm in span, this cobalt alloy turbine blade leverages the exceptional hot hardness, oxidation resistance, and creep strength of ASTM F985-compliant Co–Cr–W base material. Its surface is protected by a robust Stellite 6B coating — applied via vacuum plasma spray (VPS) — delivering superior erosion and corrosion resistance in high-velocity, particulate-laden combustion environments. As a premium casting blades solution, AeroCast-Co40 meets stringent OEM specifications for dimensional accuracy, microstructural integrity, and non-destructive inspection (NDI) compliance (RT/UT/PT).
Manufactured using proprietary directional solidification (DS) casting techniques, each blade features optimized airfoil geometry, internal cooling channel architecture, and fine-grained columnar grain structure — ensuring consistent performance across demanding duty cycles. This Stellite-coated blade is fully traceable, with full material certification (MTR), heat treatment records, and metallurgical test reports provided per order.
Key Features
- Precision investment casting per ASTM F985 for gas turbine blades
- AeroCast-Co40 cobalt alloy substrate with ≥1150 MPa UTS at 700°C
- Uniform 0.3–0.5 mm Stellite 6B coating applied via VPS with <5% porosity
- Directionally solidified microstructure for enhanced creep resistance
- Full NDI validation: radiographic (RT), ultrasonic (UT), and penetrant testing (PT)
- Customizable root geometry (e.g., fir-tree, dovetail) to match OEM rotor interfaces
Technical Specifications
| Parameter |
Value |
| Material Grade |
AeroCast-Co40 (Co–29Cr–5W–1.5C–1Ni–0.5Fe) |
| Coating |
Stellite 6B (Co–29Cr–4W–1.5C–1Ni) |
| Span Length |
410 mm ±0.15 mm |
| Blade Height |
125 mm (typ.) |
| Root Type |
Fir-tree (customizable) |
| Hardness (Substrate) |
42–46 HRC |
| Hardness (Coating) |
48–52 HRC |
| Max Operating Temp |
850°C continuous / 920°C transient |
| Tensile Strength (700°C) |
≥1150 MPa |
| Elongation (RT) |
≥8% |
| Standard Compliance |
ASTM F985, AMS 5737, GE B50TF17 |
| Surface Finish (Airfoil) |
RA ≤ 0.8 µm (as-polished) |
Applications
This cobalt alloy turbine blade is engineered for first- and second-stage applications in industrial and aero-derivative gas turbines. Ideal for OEM replacement programs and MRO upgrades, it delivers extended service life in heavy-duty environments including combined-cycle power plants, marine propulsion systems, and oil & gas compression stations. As a high-performance casting blades alternative, the AeroCast-Co40 enables operators to reduce unscheduled downtime and improve fuel efficiency — especially where traditional nickel-based blades exhibit premature oxidation or thermal fatigue. It is also widely specified in next-generation microturbines and hydrogen-blend compatible turbines requiring Stellite-coated blade resilience.
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