Rhenium Thermionic Filament from Canada
Coiled rhenium filaments for thermionic emission in vacuum tubes and electron microscopes. As manufactured articles, under HTS 8112.49.00.00. Pure rhenium form.
Duty Rate — Canada → United States
4%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Vacuum packaging essential to prevent oxidation
• Technical drawings aid classification review
• ITAR checks for microscopy defense applications