Loading...
SITCSection 6
U.S. imports of articles of mineral substances containing magnesite, dolomite, or chromite (SITC 66338) totaled $3.2M in April 2026, traded with 16 countries.
Importers of Articles of Mineral Substances Containing Magnesite, Dolomite, or Chromite paid $339K in duties in April 2026 — an effective duty rate of 10% on $3.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataMagnesite, dolomite, and chromite give these mineral articles their defining refractory and chemical-resistance properties, making them critical inputs for steelmaking furnace linings, cement kilns, and high-temperature industrial processes. Classification under this heading turns on the specific mineral content — magnesite-based shapes behave differently in duty and end-use terms than chromite-bearing articles. Importers should verify the mineral composition documentation carefully, as misclassification between this heading and adjacent refractory ceramic or stone-article headings is a common audit trigger.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key distinction is material composition: this heading covers articles whose functional basis is magnesite, dolomite, or chromite in mineral (non-ceramic) form. Refractory ceramic goods are classified separately based on their fired-ceramic character. Importers should obtain mill certificates or composition analyses to support the correct classification, and consulting a licensed customs broker is advisable given the technical overlap.
Customs entries for these articles are typically supported by a manufacturer's certificate of composition, a material safety data sheet (MSDS/SDS), or a third-party laboratory analysis confirming the magnesite, dolomite, or chromite basis. Without such documentation, CBP may reclassify the goods under a residual mineral-articles heading.
Supplier Network
Get discovered by U.S. importers searching for HS 66338 — Articles of Mineral Substances Containing Magnesite, Dolomite, or Chromite. Be the first supplier listed.
Monthly import values over time