Concentrates
Tungsten ores and concentrates: > Concentrates
Duty Rate (from China)
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2611.00.60.00
Scheelite Tungsten Concentrate
A high-grade concentrate derived from scheelite ore (CaWO4), containing approximately 65-70% WO3 after flotation processing. Classified under HTS 2611.00.60.00 as tungsten concentrates, distinct from raw ores in subheading 2611.00.10.00 due to beneficiation increasing metal content.
Wolframite Tungsten Concentrate
Flotation concentrate from wolframite ore ((Fe,Mn)WO4), typically assaying 60-68% WO3 with iron/manganese impurities. Falls under HTS 2611.00.60.00 specifically for tungsten concentrates prepared for downstream processing into APT or metal.
High-Grade Ferberite Tungsten Concentrate
Premium concentrate from ferberite (FeWO4), enriched to over 70% WO3 via multi-stage flotation. HTS 2611.00.60.00 covers such beneficiated tungsten concentrates used in electronics and aerospace applications.
Recycled Tungsten Ore Concentrate
Concentrate recovered from mining tailings or recycled scheelite/wolframite, processed to 55-65% WO3. Qualifies under HTS 2611.00.60.00 as tungsten concentrates regardless of secondary origin.
APT-Feed Tungsten Concentrate
Purified concentrate specifically prepared as feedstock for ammonium paratungstate (APT) production, with low silica/phosphorus impurities. HTS 2611.00.60.00 applies to all tungsten concentrates including those for chemical processing.