Cast Iron Turbine Inlet Case
A cast iron housing that directs airflow into the compressor section of an aircraft turbojet engine. It is cast from iron, cleaned, and minimally machined only to remove casting imperfections and facilitate finishing, fitting HTS 8411.91.10.90 as a part of aircraft turbines not advanced beyond basic preparation. This part ensures efficient air intake under high-speed flight conditions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If machined beyond cleaning and fin removal
Advanced machining for functional tolerances moves it from rough cast parts to finished components.
If for non-aircraft gas turbine applications
Cast iron parts not specifically for turbojets/turbopropellers classify under general iron castings.
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Import Tips & Compliance
• Verify cast iron composition via material certification to confirm Chapter 84 classification over Chapter 73
• Provide engine model documentation proving aircraft turbine use to avoid reclassification as ground equipment
• Ensure machining is limited to fin/gate removal; excess processing shifts to 8411.91.9045
Related Products under HTS 8411.91.10.90
Cast Iron Turbine Scroll
Cast iron scroll collecting and directing exhaust flow in small aircraft turbopropellers. Machined minimally for sprue removal and fixturing, qualifying under HTS 8411.91.10.90. Optimizes exhaust thrust vectoring.
Cast Iron Oil Sump
Bottom cast iron oil collection sump for aircraft turbine bearing compartments. Cleaned and machined only for casting defects, per HTS 8411.91.10.90 aircraft parts. Contains scavenge oil flow and debris.
Cast Iron Compressor Stator Vane Carrier
Cast iron support structure holding stator vanes in the compressor stage of aircraft turbopropellers. Produced by casting, cleaned, and machined solely for casting defect removal and fixturing, qualifying under HTS 8411.91.10.90 for aircraft turbine rough parts. It maintains vane alignment for optimal compression efficiency.
Cast Iron Turbine Exhaust Frame
Rough cast iron frame that supports the exhaust nozzle and directs hot gases in aircraft jet engines. Cleaned and machined only to eliminate sprues/risers for finishing placement, per HTS 8411.91.10.90 criteria for aircraft turbojet parts. Critical for structural integrity under extreme thermal loads.
Cast Iron Fan Case Half
Halved cast iron casing for the fan section of high-bypass aircraft turbofan engines. Cast, cleaned, gates removed, and lightly machined for assembly fixturing only, aligning with HTS 8411.91.10.90 for unfinished aircraft turbine parts. Provides containment for fan blade failures.
Cast Iron Intermediate Compressor Case
Cast iron housing connecting low- and high-pressure compressor stages in aircraft gas turbines. Limited to cleaning and machining for sprue removal/location, qualifying as HTS 8411.91.10.90 aircraft part. Essential for pressure containment and rotor support.