Cast Iridium Sponge
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.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If mechanically compacted or shaped after sponge formation
Compacted sponge becomes semi-manufactured iridium under 7110.49.
If from mining waste or precious metal residues
Precious metal ores and concentrates including unwrought residues classify in 2616.
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Import Tips & Compliance
• 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
Related Products under HTS 7110.41.00
Ruthenium Unwrought Pellet
Compressed but unwrought pellets of ruthenium for vacuum melting applications. Remains under HTS 7110.41.00 as it lacks specific shaping or working.
Unwrought Iridium Bar
A solid bar of pure iridium in unwrought form, produced by melting and casting without further processing into specific shapes. It falls under HTS 7110.41.00 as unwrought iridium, one of the platinum group metals specified in the heading for iridium, osmium, and ruthenium in unwrought or powder form.
Iridium Powder 99.9% Pure
Fine iridium powder meeting the subheading definition where 90% or more passes through a 0.5mm sieve, used in electronics and catalysis. Classified under HTS 7110.41.00 as powder form of iridium, explicitly covered in the heading for platinum group metals.
Unwrought Osmium Ingot
Cast ingot of elemental osmium in unwrought condition, valued for its density and hardness in specialized alloys. HTS 7110.41.00 covers unwrought osmium as part of the iridium, osmium, and ruthenium group within platinum metals.
Ruthenium Powder for Catalysts
High-purity ruthenium powder in form passing 0.5mm sieve, primarily used in chemical catalysis and electronics plating. Falls under HTS 7110.41.00 as unwrought powder of ruthenium, a defined platinum group metal.
Unwrought Ruthenium Shot
Small spherical pellets or shot of ruthenium produced by atomization, in unwrought form for alloying. Classified under HTS 7110.41.00 as unwrought ruthenium within the platinum group heading.