Zirconium Sponge Low-Hafnium Nuclear
Kroll process zirconium sponge chunks, hafnium <0.2%, vacuum-distilled for reactor purity. Unwrought porous form under HTS 8109.21.00.00 before pressing/compacting. Standard precursor for Zircaloy fuel cladding.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If recovered sponge from fabrication scrap
Manufacturing waste classified as scrap regardless of purity.
If ferro-zirconium sponge >30% iron
Ferro alloys under iron/steel chapter.
If supplied as zirconium oxychloride sponge precursor
Chemical compounds before reduction classified in Chapter 28.
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
• Sponge requires bulk density measurement (<2.5 g/cc) to confirm unwrought status
• Declare 'not pressed/compacted' explicitly to avoid 8109.29 powder classification
Related Products under HTS 8109.21.00.00
Low-Hafnium Zirconium Ingots
High-purity zirconium ingots with less than 1 part hafnium per 500 parts zirconium by weight, used in nuclear reactor components and chemical processing equipment. Classified under HTS 8109.21.00.00 as unwrought zirconium in ingot form, not yet processed into bars or rods. Meets the hafnium purity requirement for applications requiring minimal neutron absorption.
Zirconium Powder 99.5% Pure Low-Hafnium
Atomized zirconium powder containing less than 1:500 hafnium ratio, particle size -100 mesh, for powder metallurgy and additive manufacturing. HTS 8109.21.00.00 covers unwrought powders of this purity. Essential for aerospace components and medical implants due to corrosion resistance.
Zirconium Pigs Nuclear Grade
Cast zirconium pigs with hafnium <0.2% (1:500 ratio), weighing 25-50kg each, produced via Kroll process for remelting. Unwrought form under HTS 8109.21.00.00 due to low hafnium for reactor cladding. Primary material for fuel rods and control elements.
Reactor-Grade Zirconium Billets
Semi-finished zirconium billets, hafnium content 0.018% max (<1:500), diameter 8-12 inches for forging into tubesheets. HTS 8109.21.00.00 as unwrought since not hot/cold worked. Critical for pressurized water reactors (PWR).
High-Purity Zr Granules Low-Hafnium
Granular unwrought zirconium, <1:500 hafnium, 1-5mm size for vacuum arc melting stock. Used in sputtering targets and thin-film deposition. HTS 8109.21.00.00 covers granules as unwrought form before fabrication.