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2818.10.20.10/Ruby Fused Alumina Powder 99.5% Al2O3/Japan

Ruby Fused Alumina Powder 99.5% Al2O3 from Japan

Ultra-fine ruby-colored fused alumina powder with 99.5% aluminum oxide, refined for optical and lapping applications. Classified in HTS 2818.10.20.10 as high-purity, colored artificial corundum that is pulverized. Provides superior hardness for metallurgical polishing and thin-film coatings.

Duty Rate — Japan → United States

1.3%

Rate breakdown

9903.05.860%Universal product exemption (U.S. note 52(b))
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Import Tips

• Include XRF spectrometry results proving >97.5% Al2O3 and ruby pigmentation

• Specify micron size (e.g

• D50=1-5μm) to validate 'refined/pulverized' form