Iridium Sponge from Mexico
Porous iridium sponge produced by thermal decomposition, a semimanufactured intermediate form before final fabrication into wires or foils. Falls under HTS 7110.49.0010 as iridium separately, not powder per subheading note requiring 90% through 0.5mm sieve. Used in spark plug electrodes and crucibles.
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
• Provide lab assay reports distinguishing sponge from powder to comply with subheading particle size note
• Use secure packaging to prevent loss; declare as hazardous material if pyrophoric properties present
• Monitor London Platinum Market quotes for valuation, as iridium trades separately from platinum