2818.10.20.90/Calcined Alumina 99.8% Pure 5 Micron/Japan

Calcined Alumina 99.8% Pure 5 Micron from Japan

Ultra-high purity calcined alumina powder (5 micron, 99.8% Al2O3) for LED substrates and electronic ceramics. HTS 2818.10.20.90 covers this pulverized artificial corundum, refined to exacting chemical specifications. Essential for sapphire crystal growth precursors.

Duty Rate — Japan → United States

1.3%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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Import Tips

• Electronic-grade requires <10ppm impurities; include full elemental analysis

• Moisture content critical (<0.3%); specify in contracts to prevent clumping

• Cleanroom packaging mandatory for semiconductor destinations