Sapphire Polishing Powder
High-purity synthetic sapphire (corundum) powder for semiconductor wafer polishing, meeting 0.5mm sieve standard. HTS 7105.90.00.00 covers synthetic semi-precious stone powders other than diamonds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically pure artificial corundum
Artificial corundum (aluminum oxide) without gem quality treated as chemical under 2818.
If in abrasive disk form
Abrasive wheels of synthetic corundum classify under heading 6805.
If from natural sapphire/emery
Natural semi-precious stone powder (emery/sapphire) has dedicated subheading.
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Import Tips & Compliance
• Certify synthetic composition and powder fineness per Chapter 71 notes
• For electronics end-use, prepare for potential anti-dumping scrutiny on Asian imports
• Label clearly as raw powder, not pre-mounted abrasive to stay in Chapter 71
Related Products under HTS 7105.90.00.00
Tourmaline Abrasive Powder
Natural tourmaline dust for specialty polishing of hardened steels and ceramics. HTS 7105.90.00.00 covers other natural semi-precious stone powders.
Synthetic Opal Powder
Lab-created silica-based opal powder for iridescent coatings and polishing. Classified under 7105.90.00.00 as synthetic semi-precious stone powder.
Peridot Dust
Natural olivine (peridot) powder for olivine sandblasting alternatives. Meets 7105.90.00.00 for natural semi-precious stone dust.
Aquamarine Grinding Powder
Natural beryl (aquamarine) powder for high-end lapidary and optics work. HTS 7105.90.00.00 for other natural semi-precious stone powders.
YAG Laser Powder
Yttrium aluminum garnet (YAG) synthetic powder precursor for laser crystals. Classified under 7105.90.00.00 as synthetic precious stone powder for optical applications.
Synthetic Diamond Powder
Fine synthetic diamond powder where 90% or more passes through a 0.5 mm sieve, used for industrial grinding and polishing applications. Classified under HTS 7105.90.00.00 as powder of synthetic precious stones (diamonds). Meets subheading note definition for 'powder form'.