Unwrought Platinum Sponge
Platinum sponge is a porous, unwrought form of platinum produced by chemical precipitation and reduction processes, containing over 99.9% pure platinum by weight. It falls under HTS 7110.11.0050 as unwrought platinum in powder form where 90% or more passes through a 0.5 mm sieve, distinct from bars or ingots. This form is commonly used in catalysis and jewelry fabrication.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If processed into bars, ingots, or profiles
Unwrought platinum in forms other than powder, like cast bars, shifts to semimanufactured under chapter notes excluding powder form.
If iridium content predominates by weight
Alloys classified with the metal (iridium, osmium, etc.) that predominates per note 5 classification rules for platinum group metals.
If containing 2% or less platinum as minor constituent
Precious metal compounds or residues not qualifying as precious metal alloys under note 5(a)-(c) fall under Chapter 26 for metal ores/residues.
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Import Tips & Compliance
• Provide assay certificates verifying platinum purity exceeds 99.5% and powder fineness meets subheading note criteria (90% through 0.5mm sieve)
• Declare exact weight and form (sponge/powder) on commercial invoice; misclassification as semimanufactured risks re-assessment under 7110.19
• Ensure CITES-free sourcing documentation if alloyed traces suggest conflict minerals; common pitfall is undervaluation based on spot price fluctuations
Related Products under HTS 7110.11.00.50
Electrodeposited Platinum Powder
Platinum powder produced via electrolytic deposition, high purity unwrought form passing sieve test. HTS 7110.11.0050 for other platinum powders, used in electrical contacts and plating anodes. Efficient recovery method.
Platinum Powder for Jewelry Alloying
Fine platinum powder blended into white gold or platinum alloys for investment casting. Meets unwrought powder specs under HTS 7110.11.0050, pure platinum basis. Standard in high-end jewelry manufacturing.
Platinum Black Powder
Platinum black is a fine, colloidal powder form of platinum used as a catalyst in chemical reactions, with particle sizes ensuring 90%+ passes 0.5mm sieve. Classified under HTS 7110.11.0050 as unwrought platinum powder, excluding plated or clad forms per chapter notes. Ideal for laboratory and industrial hydrogenation processes.
Atomized Platinum Powder for Additive Manufacturing
Gas-atomized spherical platinum powder optimized for selective laser melting, with fineness meeting powder definition. HTS 7110.11.0050 covers this unwrought form for aerospace/medical implants. Enables complex precision components.
Fine Platinum Powder 99.99% Pure
Atomized fine platinum powder with 99.99% purity, used in additive manufacturing and electronics, meeting powder form definition (90% through 0.5mm). HTS 7110.11.0050 covers this unwrought platinum, not including sintered or clad alloys. Essential for 3D printing high-performance components.
Platinum Catalyst Powder
High-surface-area platinum powder designed for catalytic converters and fuel cells, qualifying as unwrought powder under sieve test. Falls under HTS 7110.11.0050 for pure platinum powder, separate from supported catalysts. Critical for automotive emission control systems.