Cast Iridium Sponge
Cast iridium sponge is a porous, unwrought form of iridium produced by chemical precipitation and reduction. It is considered unwrought prior to fabrication and is a common precursor for further processing into semi-manufactured forms.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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 the sponge is further worked into semi-manufactured forms
Semi-manufactured iridium falls under a different subheading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the sponge is in unwrought form and not further processed
• Declare the weight and purity accurately
• Consult the CBSA's tariff classification advice for confirmation
Related Products under Tariff item 7110.41.00
99.999% Iridium Lump
Irregular chunks of ultra-high purity (5N) iridium from electrolysis, weighing 100g-500g each. They are classified as unwrought pure iridium under this tariff item.
Arc-Melted Iridium Button
Disc-shaped iridium mass from vacuum arc remelting, typically 50mm diameter, serving as stock for forging. It remains unwrought under this tariff item despite casting.
High-Purity Iridium Pellets
Cylindrical or cubic pressed pellets of 99.99% pure iridium for electron beam evaporation in thin-film deposition. They are unwrought as simple compression forms, not machined or rolled.
Iridium Casting Grain
Small, irregular granules of pure iridium designed for melting in investment casting applications. They are classified as unwrought form, not semi-finished like bars or sheets.
Iridium Powder 99.9% Pure
Iridium powder with 99.9% purity, where 90% or more passes through a 0.5mm sieve, is classified as powder form under this tariff item. It is used in electronics and catalysis.
Iridium Powder Precursor Sponge
Coarse sponge fragments intended for milling into powder, classified as unwrought under this tariff item since the current form doesn't meet powder sieve criteria. Used in additive manufacturing and catalyst preparation.