High-Purity Hafnium Granules
Granular hafnium with purity above 99.95%, used for plasma spray coatings on rocket nozzles. These sized granules are treated as 'other' hafnium articles beyond unwrought powder specifications, classified under tariff item 8112.39.00.
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 granules are in powder form with 90% or more passing through a 1mm sieve
Powders of hafnium are classified separately from other articles under the chapter notes.
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
• Verify the granule size distribution to ensure they do not meet the definition of 'powders' under section note 8 (90% or more passing through a 1mm sieve)
• Provide a certificate of analysis showing purity and particle size to the CBSA
• Check if the granules are eligible for duty relief under the MFN rate or a trade agreement
Related Products under Tariff item 8112.39.00
Hafnium Crucible Liners
Custom-machined hafnium liners designed to fit inside crystal growth crucibles used in semiconductor manufacturing. These are finished articles of hafnium, not raw forms, and fall under tariff item 8112.39.00 as 'other' articles of hafnium.
Hafnium Evaporation Pellets
Small hafnium pellets used in vacuum deposition processes to create thin-film coatings on semiconductors and optical components. These are processed hafnium articles beyond unwrought powder, classified under tariff item 8112.39.00 as 'other' hafnium products.
Hafnium Foil for Superalloy Cladding
Thin hafnium foil sheets used to clad nickel superalloy turbine blades, providing oxidation resistance at high temperatures. These are wrought hafnium products in sheet or foil form, classified under tariff item 8112.39.00 as 'other' hafnium articles.
Hafnium Getter Alloy Discs
Sintered hafnium discs alloyed with zirconium, used as getters in vacuum tubes to absorb residual gases. These are hafnium-dominant articles (over 99% hafnium by weight) and are classified under tariff item 8112.39.00 as 'other' hafnium articles.
Hafnium Master Alloy Ingot
Compact ingots of hafnium with trace elements, used as master alloys in superalloy production for jet turbine blades. These are hafnium-dominant articles with hafnium content at or above 99%, classified under tariff item 8112.39.00 as 'other' hafnium articles, provided they are not unwrought powder.
Hafnium Reactor Control Rod Segments
Machined hafnium segments designed for nuclear reactor control rods, which absorb neutrons to regulate fission. These are specialized articles of hafnium fabricated beyond basic wrought forms, classified under tariff item 8112.39.00 as 'other' hafnium articles.