Product Overview
The AeroForge-TD420 Compact Aerospace Turbine Disc is a high-integrity, FAA-PMA approved rotating component engineered for next-generation turbofan and turboshaft engines. With a precise diameter of Ø420mm and thickness of 85mm, this compact turbine disc delivers exceptional power-to-weight ratio and thermal stability under extreme operational conditions. Manufactured from premium Udimet 720Li — a gamma-prime strengthened nickel-based superalloy — it combines superior creep resistance, fatigue strength, and oxidation resistance up to 720°C. Each disc undergoes full Hot Isostatic Pressing (HIP) followed by a certified dual-age heat treatment, ensuring homogenous microstructure, zero internal porosity, and optimal grain boundary control. As a fully traceable FAA-PMA turbine disc, the AeroForge-TD420 meets stringent AS9100 Rev D, AMS 2750E, and NADCAP-accredited process requirements — making it a trusted drop-in replacement or OEM-qualified upgrade.
Key Features
- FAA-PMA approved for immediate integration into certified aircraft propulsion systems
- Forged & HIP-treated Udimet 720Li disc with dual-age thermal processing
- Optimized geometry for reduced rotational inertia and enhanced cooling airflow
- Full material traceability: MTRs, PMI, ultrasonic (UT) C-scan, and fluorescent penetrant inspection (FPI) included
- Surface finish per AMS 2430 (shot peened) and balanced to G0.4 per ISO 1940-1
- Designed for compatibility with common hub-bolt patterns and rim-cooling slot configurations
Technical Specifications
| Parameter |
Value |
| Part Number |
AeroForge-TD420 |
| Material |
Udimet 720Li (AMS 5951) |
| Diameter |
Ø420 mm ±0.05 mm |
| Thickness |
85 mm ±0.1 mm |
| Weight |
≈38.2 kg (as-forged), ≈36.7 kg (final machined) |
| Heat Treatment |
HIP + Dual-Age (1080°C/4h AC + 775°C/16h AC) |
| Hardness |
38–42 HRC (rim), 36–40 HRC (bore) |
| Tensile Strength (Rm) |
≥1320 MPa at 650°C |
| Yield Strength (Rp0.2) |
≥980 MPa at 650°C |
| Elongation |
≥14% (L0 = 50 mm) |
| Ultrasonic Inspection |
AMS 2175 Level A, no indications ≥1.2 mm flat-bottom hole equivalent |
| FAA Approval Status |
FAA-PMA Certified (PMA #A420-TD720LI-01) |
Applications
The AeroForge-TD420 serves as a critical HIP turbine disc in high-pressure turbine (HPT) and intermediate-pressure turbine (IPT) stages of civil and military gas turbine engines. Its compact design and Udimet 720Li composition make it ideal for advanced engine programs requiring extended time-on-wing, reduced maintenance intervals, and compliance with evolving emissions and efficiency mandates. Typical applications include retrofit upgrades for CFM56, V2500, and T700 derivatives, as well as new-build platforms in regional jet, UAV propulsion, and auxiliary power units (APUs). As a qualified compact turbine discs solution, it supports rapid fleet modernization without redesign or recertification overhead.
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