Unwrought or in powder form
Platinum, unwrought or in semi-manufactured forms, or in powder form. > Iridium, osmium and ruthenium: > Unwrought or in powder form > Unwrought or in powder form
Duty Rate (from China)
Subheadings
Products classified 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.
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.
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.
Osmium Powder Ultra-Fine
Ultra-fine osmium powder for thin-film deposition, compliant with the 0.5mm sieve passage per subheading note. It is classified as powder form of osmium under this tariff item.
Pure Iridium Sponge
Porous iridium sponge produced via chemical precipitation and reduction, serving as an intermediate form before consolidation into ingots. It falls under this tariff item as unwrought iridium.
Ruthenium Powder for Catalysts
High-purity ruthenium powder in form passing 0.5mm sieve, primarily used in chemical catalysis and electronics plating. It falls under this tariff item as powder form of ruthenium.
Ruthenium Unwrought Pellet
Compressed but unwrought pellets of ruthenium for vacuum melting applications. They remain under this tariff item as they lack 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 this tariff item as unwrought iridium.
Unwrought Iridium Grain
Granular unwrought iridium produced by gas atomization, used directly in powder metallurgy. It is classified as unwrought form of iridium under this tariff item.
Unwrought Osmium Ingot
Cast ingot of elemental osmium in unwrought condition, valued for its density and hardness in specialized alloys. It is covered under this tariff item as unwrought osmium.
Unwrought Ruthenium Shot
Small spherical pellets or shot of ruthenium produced by atomization, in unwrought form for alloying. It is classified under this tariff item as unwrought ruthenium.