Wrought tungsten articles are composed predominantly of metallic tungsten that has been mechanically worked, whereas cemented tungsten carbide consists of tungsten carbide particles bonded with a metal binder (typically cobalt) and classifies under a separate heading. The distinction affects both the applicable SITC/HTS code and the duty rate, so importers should obtain a material composition certificate and, if uncertain, seek a binding ruling from CBP.

Wrought tungsten and tungsten articles originating in China are subject to Section 301 tariffs. Because rates and product coverage under Section 301 have been subject to ongoing review and modification, importers should verify the current applicable rate for their specific HTS subheading with a licensed customs broker before finalizing sourcing decisions.