Hafnium Getter Alloy Discs
Sintered hafnium discs with zirconium for vacuum tube getters absorbing residual gases. Classified HTS 8112.39.00.00 as hafnium-dominant (>99%) 'other' articles.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 4% | +37.5% | 41.5% |
| 🇲🇽Mexico | 4% | +10.0% | 14% |
| 🇨🇦Canada | 4% | +10.0% | 14% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +12.5% | 12.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If zirconium-hafnium alloy <99% Hf
Alloys classified under dominant Chapter 81 metal (zirconium 8108).
If assembled in vacuum tubes
Getter assemblies in finished vacuum/thermionic valves 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 HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Alloy composition reports must show hafnium as principal element (> any other metal)
• Declare activation temperature and getter capacity for technical validation
• Small quantities may qualify for duty-free under scientific instrument provisions
Related Products under HTS 8112.39.00.00
Hafnium Sponge
Porous hafnium metal produced by reducing hafnium tetrachloride with magnesium, used in nuclear reactor control rods and aerospace alloys. Classified under HTS 8112.39.00.00 as 'other' hafnium not specified elsewhere in the hafnium heading, distinct from unwrought forms like powder or bars.
Hafnium Master Alloy Ingot
Compact ingot of hafnium with trace elements for alloying in superalloys, used in jet turbine blades. Falls under HTS 8112.39.00.00 as 'other' articles of hafnium, provided hafnium content is ≥99% and not unwrought powder.
Hafnium Reactor Control Rod Segments
Machined hafnium segments for nuclear reactor control rods that absorb neutrons. Classified in HTS 8112.39.00.00 as 'other' hafnium articles due to specific nuclear fabrication beyond basic wrought forms.
Hafnium Evaporation Pellets
Small hafnium pellets used in vacuum deposition for thin-film coatings in semiconductors and optics. HTS 8112.39.00.00 covers these as 'other' hafnium articles, not basic unwrought powder.
Hafnium Wire for Additive Manufacturing
High-purity hafnium wire spooled for laser powder bed fusion in aerospace prototyping. Classified under HTS 8112.39.00.00 as 'other' wrought hafnium products beyond standard profiles.
Recovered Hafnium Machining Scrap
Clean hafnium turnings and chips from aerospace component machining, suitable for remelting. Under HTS 8112.39.00.00 as 'other' hafnium including processed scrap forms, separate from raw waste.