Tungsten Nitride WN Powder from Mexico
Tungsten nitride (WN) powder serves as a diffusion barrier in semiconductor manufacturing and decorative coatings. It qualifies for HTS 2850.00.10.00 as a chemically defined nitride of tungsten, not a carbide. The material offers high hardness and corrosion resistance.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include nitrogen content certification (>10% wt) to distinguish from pure tungsten metal
• Declare as UN3077 environmentally hazardous if particle size <100μm per IMDG regulations
• Watch for anti-dumping duties on Chinese-origin refractory metal compounds