Iridium Sponge
Iridium sponge is a porous, semi-manufactured form of iridium metal produced by reducing iridium compounds, used in the manufacture of high-temperature alloys and spark plugs. It falls under HTS 7110.49.00 as 'other' iridium in semi-manufactured form, distinct from unwrought bars or powder. This classification applies per Chapter 71 notes treating iridium as platinum group metals.
Import Duty Rates by Country of Origin
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 in powder form with 90% passing 0.5mm sieve
Powder form iridium classifies separately under subheading 7110.41 per subheading note definition.
If imported as waste or scrap
Unwrought iridium scrap falls under heading 7112 for waste and sweepings, per note 10 priority.
If as precious metal compounds rather than elemental metal
Iridium compounds are classified in Chapter 26 as metal ores/concentrates, not Chapter 71 metals.
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
• Verify metal purity via assay certificate to confirm iridium predominance per note 5 classification rules
• Provide origin documentation proving non-CITES restricted sourcing for precious metals
• Avoid misclassification as scrap (7112) by ensuring sponge is semi-manufactured, not waste
Related Products under HTS 7110.49.00
Osmium Wire (Semi-Manufactured)
Osmium wire in semi-manufactured form, typically 0.5-1mm diameter, used in medical implants and electrical contacts due to its hardness. Classified under HTS 7110.49.00 as 'other' osmium, ruthenium, or iridium not unwrought or powder. Excludes fully finished products per Chapter 71 structure.
Ruthenium Foil (Thickness 0.1mm)
Thin ruthenium foil (0.1mm thick) in semi-manufactured form for plating baths and catalyst production. HTS 7110.49.00 covers 'other' forms of ruthenium excluding unwrought and powder, as defined in Chapter notes for platinum group metals.
Iridium Sheet (Semi-Manufactured)
Rolled iridium sheet (semi-manufactured, 1mm thick) for crucibles in semiconductor production. Under HTS 7110.49.00 as other iridium forms; unwrought would be cast ingots, excluded here.
Ruthenium Strip for Catalysts
Ruthenium metal strip (semi-manufactured, 0.2mm x 10mm) used as catalyst precursor in hydrogenation processes. Classifies in HTS 7110.49.00 for other ruthenium forms per platinum group definitions.
Osmium Black Powder Alternative Form
Osmium black in compacted semi-manufactured pellets (not qualifying as powder per sieve test), used in alloying. HTS 7110.49.00 for other osmium forms excluding true powder.
Iridium-Ruthenium Alloy Wire
Semi-manufactured wire alloy with 60% iridium / 40% ruthenium for electrical contacts. Classified under HTS 7110.49.00 as iridium-predominant alloy per note 5 weight rules.