Pure Iridium Sponge
Porous iridium sponge produced via chemical precipitation and reduction, serving as an intermediate form before consolidation into ingots. Falls under HTS 7110.41.00.10 as unwrought iridium, distinct from powder due to particle size exceeding subheading note's 0.5mm sieve threshold. Used in electronics and aerospace manufacturing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If finely divided to pass 0.5mm sieve
Subheading note defines powder as 90%+ through 0.5mm mesh, reclassifying fine sponge to powder subheading.
If iridium compounds before reduction
Unreduced salts or compounds classified in Chapter 28 as metallic salts, not pure metal.
If mixed with osmium residues
Chapter note 5 classifies alloys by predominant PGM; non-pure sponge with other PGMs shifts category.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Conduct sieve analysis to confirm not 'powder form' per subheading note; provide chemical reduction process documentation
• Common pitfall: undervaluation based on sponge density—declare gross weight accurately
Related Products under HTS 7110.41.00.10
Unwrought Iridium Ingot
A solid iridium ingot produced by melting and casting pure iridium metal, weighing typically 1 kg or more, used as raw material for further processing. Classified under HTS 7110.41.00.10 as unwrought iridium in its basic metal form, not shaped into plates, sheets, or other semimanufactured products. Meets chapter notes defining platinum group metals including iridium.
Iridium Casting Grain
Small, irregular granules of pure iridium designed for melting in investment casting applications. HTS 7110.41.00.10 applies as unwrought form, not semifinished like bars or sheets, per tariff definitions excluding worked shapes. Essential for jewelry and dental alloy production.
High-Purity Iridium Pellets
Cylindrical or cubic pressed pellets of 99.99% pure iridium for electron beam evaporation in thin-film deposition. Unwrought status under HTS 7110.41.00.10 as simple compression form, not machined or rolled. Critical for semiconductor sputtering targets.
Iridium Powder Precursor Sponge
Coarse sponge fragments intended for milling into powder, classified unwrought under HTS 7110.41.00.10 since current form doesn't meet powder sieve criteria. Used in additive manufacturing and catalyst preparation.
99.999% Iridium Lump
Irregular chunks of ultra-high purity (5N) iridium from electrolysis, weighing 100g-500g each. HTS 7110.41.00.10 as unwrought pure iridium, excluding clad or plated forms per chapter notes.
Arc-Melted Iridium Button
Disc-shaped iridium mass from vacuum arc remelting, typically 50mm diameter, serving as stock for forging. Remains unwrought under HTS 7110.41.00.10 despite casting, as not semifinished profile.