Tungsten Waste and Scrap

CBP classifies cemented carbide scrap based on the essential character of the material, which is typically tungsten carbide given its predominance by weight and value. Such scrap is generally classified under HTS 8101970000 as tungsten waste and scrap. However, if the cobalt content is unusually high or the material is marketed primarily as a cobalt source, reclassification under Chapter 81 cobalt provisions could be argued. A binding ruling is advisable for non-standard compositions.

Tungsten scrap is not generally subject to US export controls, but importers should verify that the exporting country has not imposed restrictions on scrap metal exports — several countries have done so for strategic metals. On the environmental side, cemented carbide scrap containing cobalt may require hazardous-material characterization under EPA regulations if cobalt concentrations exceed threshold levels, particularly for shipments that transit or originate in jurisdictions with Basel Convention obligations.