Rhenium Thermionic Filament
Coiled rhenium filaments designed for thermionic emission in vacuum tubes and electron microscopes. These are manufactured articles of rhenium, not wire or raw metal, and fall under the 'Other' tariff item for rhenium.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the filaments are imported as parts of electron microscopes or vacuum tubes.
Electrical apparatus parts may fall under Chapter 85.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify these as finished articles, not as wire, to avoid heading 8112.99
• Provide filament specifications and rhenium purity documentation
• If the filaments are part of a larger device, consider Chapter 85 classification
Related Products under Tariff item 8112.49.00
Rhenium Calibration Weight
Precision-machined rhenium weights used for calibrating analytical balances in laboratories. These are finished articles of rhenium, not raw or unwrought metal, and fall under the 'Other' tariff item for rhenium articles.
Rhenium Crucible for Crystal Growth
Cylindrical rhenium crucibles designed for high-temperature crystal growth in semiconductor manufacturing. These are fabricated articles of rhenium, distinct from unwrought metal, and are classified under the 'Other' tariff item for rhenium.
Rhenium Electrical Contact Points
Riveted or welded rhenium tips used in high-reliability electrical contacts for switches and relays. These are finished articles of rhenium, not raw material, and fall under the 'Other' tariff item for rhenium articles.
Rhenium Evaporation Boat
Boat-shaped rhenium containers used for thermal evaporation in vacuum coating systems. These are fabricated articles of rhenium, distinct from unwrought metal, and are classified under the 'Other' tariff item for rhenium.
Rhenium Foil for Catalysts
Thin rhenium foil sheets used as substrates or promoters in petroleum reforming catalysts. These are fabricated articles of rhenium, not waste or unwrought metal, and fall under the 'Other' tariff item for rhenium.
Rhenium Heat Exchanger Fin
Thin rhenium fins designed for high-temperature heat exchangers in rocket engines. These are precision-fabricated articles of rhenium, not raw metal, and are classified under the 'Other' tariff item for rhenium.