Osmium Sponge (Unwrought)
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If ground to powder form per subheading note
Osmium powder (90% through 0.5mm sieve) specifically goes to 7110.41.0010.
If ruthenium predominant in alloy sponge
Alloys classified by predominant PGM; ruthenium sponge would shift per note 4.
If imported as metal salts or compounds
Chemical compounds of rare metals like osmium salts classify in heading 2841.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• 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
Related Products under HTS 7110.41.00.50
Unwrought Iridium Ingot
A solid ingot of high-purity iridium in unwrought form, typically cast into bars or blocks for further processing. Classified under HTS 7110.41.0050 as unwrought iridium, one of the platinum group metals, not in powder form or semimanufactured shapes like wire or plate.
Ruthenium Casting Grain (Unwrought)
Small irregular ruthenium grains used directly for melting and casting into alloys. HTS 7110.41.0050 applies to unwrought ruthenium not in powder form, distinct from semimanufactured pellets or wire.
Recycled Osmium Unwrought Lump
Irregular lumps of refined osmium from scrap recovery, in unwrought condition for remelting. HTS 7110.41.0050 covers such 'other' unwrought platinum group metals excluding powder.
High-Purity Ruthenium Shot (Unwrought)
Small spherical ruthenium shot produced by atomization but qualifying as unwrought due to irregular form. Falls under 7110.41.0050 for unwrought ruthenium not meeting powder sieve criteria.
Unwrought Iridium-Ruthenium Alloy Bar
Cast bar alloy where ruthenium predominates over iridium and other PGMs by weight. Classified in HTS 7110.41.0050 as unwrought 'other' iridium/osmium/ruthenium per chapter note 4 classification rules.