Cast Niobium Billets Superconductor Grade from Germany
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.
Duty Rate — Germany → Canada
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Import Tips
• 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