Tungsten Silicide Powder from Germany
Tungsten silicide (WSi2) is a refractory intermetallic compound used in microelectronics for gate electrodes and low-resistivity VLSI components. It falls under HTS 2850.00.10.00 as a chemically defined silicide of tungsten, distinct from carbides in heading 2849. The product is typically supplied as a fine gray powder for high-temperature applications.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify chemical purity via certificate of analysis to confirm classification as chemically defined under Chapter 28 notes
• Ensure MSDS documentation highlights non-carbide nature to avoid reclassification under heading 2849
• Check for REACH compliance if transshipping through EU; tungsten compounds may trigger additional scrutiny