Hafnium Sponge from Japan
Porous hafnium metal produced by reducing hafnium tetrachloride with magnesium, used in nuclear reactor control rods and aerospace alloys. Classified under HTS 8112.39.00.00 as 'other' hafnium not specified elsewhere in the hafnium heading, distinct from unwrought forms like powder or bars.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Obtain certificates of purity analysis confirming hafnium content exceeds 99% by weight to avoid alloy classification under Chapter 81
• Declare as 'other hafnium' with detailed chemical composition; misdeclaration as waste/scrap triggers different environmental regulations
• Ensure end-use documentation for nuclear-sensitive materials to comply with export control re-import requirements