Niobium Ingot 99.9% Pure
A solid cast block of unwrought niobium metal with 99.9% purity, used primarily in aerospace and superconducting applications. This falls under HTS 8112.92.4000 as unwrought niobium, excluding alloys where niobium is less than 99% by weight per Chapter 81 notes. It is typically produced by electron beam melting for high purity.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing impurities making it an alloy
Chapter 81 notes define alloys as <99% base metal; shifts to 'other base metals' unwrought if niobium diluted.
If ferro-niobium for steelmaking
Ferro-niobium classified under Chapter 72 as ferroalloys, not pure niobium.
If in powder form
Powders of niobium fall under separate subheading 8112.92.60 within same heading.
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Import Tips & Compliance
• Verify purity certificate from supplier exceeds 99% niobium to avoid reclassification as Chapter 81 alloy
• Include material safety data sheets (MSDS) documenting non-hazardous handling for niobium
Related Products under HTS 8112.92.40.00
Cast Niobium Billets Superconductor Grade
Cylindrical cast billets of superconductor-grade niobium, unwrought for extrusion into wires. HTS 8112.92.4000 covers this pure columbium form, RRR >300 for radiofrequency cavities. Diameter 150-250mm typical.
Ferroniobium Scrap 65% Nb
Recycled scrap from ferroniobium production containing at least 65% niobium, in loose or baled form for remelting. Classified under HTS 8112.92.4000 as niobium waste and scrap, distinct from pure wrought articles. Used by steel mills for microalloying high-strength steels.
Unwrought Niobium Bar Reactor Grade
High-purity niobium bars in unwrought form, reactor grade for nuclear applications, with ultra-low tantalum content. Fits HTS 8112.92.4000 as unwrought niobium, valued for corrosion resistance in chemical processing. Supplied as cast or forged sections under 250mm diameter.
Niobium Powder Reactor Grade -325 Mesh
Ultra-fine niobium powder (-325 mesh) for reactor-grade applications in powder metallurgy and coatings. Covered by HTS 8112.92.4000 as niobium powders (unwrought/waste form), essential for sputtering targets. Purity exceeds 99.95% with controlled oxygen content.
Virgin Niobium Slab Electron Beam Melted
Virgin niobium slabs produced via electron beam melting, unwrought form for further rolling into sheets. HTS 8112.92.4000 applies to this pure niobium (columbium) in slab form, critical for superconducting magnets. Thickness typically 25-50mm.
Niobium Turning Scrap High Purity
Machining turnings and chips from high-purity niobium fabrication, collected as loose scrap for recycling. Falls under HTS 8112.92.4000 as niobium waste and scrap, maintaining >99% purity. Remelted for aerospace components.