</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

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