Cast Niobium Billets Superconductor Grade
Cast niobium billets of superconductor-grade purity are unwrought forms of niobium metal, specifically produced for extrusion into wires. These cylindrical billets have a residual resistivity ratio (RRR) greater than 300, making them suitable for radiofrequency cavities in particle accelerators. They are classified under tariff item 8112.92.00 as unwrought niobium, with typical diameters ranging from 150 to 250 mm.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the billets have been extruded or otherwise worked
Wrought niobium articles are classified under this alternative tariff item.
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 that the niobium billets are unwrought and not further processed, as this determines classification under 8112.92.00
• Provide documentation confirming the RRR value and purity to support the superconductor-grade claim
• Check if any end-use certificates are required for nuclear or aerospace applications
Related Products under Tariff item 8112.92.00
Beryllium Scrap Metal
Recycled beryllium waste and scrap generated from machining operations in aerospace and electronics manufacturing. This material is classified as waste and scrap of beryllium, a rare metal listed under this heading.
Cadmium Solder Dross Scrap
Dross and skimmings from low-melt cadmium-bearing solders used in electronics assembly. As cadmium waste, this material is classified as waste and scrap under this tariff item.
Chromium Evaporation Boat Scrap
Used chromium evaporation boats from vacuum coating for decorative and functional thin films. As chromium waste, this material is classified as waste and scrap under this tariff item.
Ferroniobium Scrap 65% Nb
Ferroniobium scrap containing at least 65% niobium is recycled material from ferroniobium production, in loose or baled form for remelting. This scrap is classified under tariff item 8112.92.00 as niobium waste and scrap, distinct from pure wrought articles. It is used in the production of niobium alloys and steels.
Gallium Metal Ingots 99.999% Pure
High-purity (5N) gallium ingots, unwrought and ready for vacuum distillation in electronics production. This falls under this tariff item as unwrought gallium, separate from waste, scrap, or powdered forms.
Gallium Metal Lumps for Liquid Metal Alloys
Unwrought gallium lumps (3-10g each) for alloying into low-melt solders and thermal fluids. This is classified as unwrought gallium, before mixing with indium or tin.