Heat-Treated Natural Corundum Powder
Fine powder derived from naturally occurring corundum ore, thermally treated to enhance friability for polishing applications. Falls under HTS 2513.20.9000 as 'other natural abrasives,' encompassing mineral corundum excluding crude forms.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically purified to high alumina content
Highly refined natural corundum resembling synthetic aluminum oxide shifts to Chapter 28 chemicals.
If milled into powder for millstones or grinding wheels
Powder specifically prepared as abrasive grains for incorporation into Chapter 68 articles moves there.
If in crude ore concentrate form before powdering
Unprocessed corundum ore concentrates remain under Chapter 26 as aluminum ores.
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Import Tips & Compliance
• Provide geological source documentation proving natural origin, as synthetic corundum (alumina) is excluded and duties elsewhere
• Declare exact particle size distribution; fines under 100 mesh still qualify if not chemically altered
• Watch for reclassification to 2818.10 if purity exceeds 99% Al2O3 resembling artificial aluminum oxide
Related Products under HTS 2513.20.90.00
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