Calcined Alumina 99.8% Pure 5 Micron from Germany
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 — Germany → United States
1.3%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
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