Osmium Sponge (Unwrought) from Mexico
Porous osmium sponge produced by chemical reduction, considered unwrought as it requires further consolidation. Falls under HTS 7110.41.0050 for unwrought osmium or ruthenium in non-powder form, per HTS definitions excluding semimanufactured shapes.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Include lab analysis showing osmium >2% and no predominant other PGMs for classification
• Avoid common error of declaring as powder; sponge is unwrought if not sieved to 0.5mm spec
• Use specialized packaging to prevent oxidation; declare HS correctly to evade anti-dumping scrutiny