Cast Iridium Sponge from Canada
Porous sponge form of iridium produced by chemical precipitation and reduction, considered unwrought prior to fabrication. HTS 7110.41.00 includes this as unwrought iridium, common precursor for further processing.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Distinguish sponge from powder via sieve test; sponge typically doesn't fully pass 0.5mm
• Provide production process documentation showing no mechanical working beyond casting