Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:
Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:
What this covers
This HTS heading covers various types of clays and related minerals, including andalusite, kyanite, sillimanite, mullite, chamotte, and dinas earths, whether or not calcined, but excludes expanded clays listed under heading 6806.
How the 15.0% is built.
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1Apply base HTS rateColumn 1 General (MFN) or Special (FTA)
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2Add Section 301 (if origin qualifies)Chapter 99 subheading layered on
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3Add IEEPA / 232 surchargesCountry-scoped emergency measures
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4Add MPF & HMF feesApplied to entered value
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Rate by country of origin
Same HTS, very different landed cost. Here's how 2508 looks from the top trading partners — on a $10,000 shipment.
Citations for 2508
FAQ for this HTS code.
What is this HTS code?
This is a US Harmonized Tariff Schedule (HTS) code that classifies "Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:". It determines base duty rates for imports; additional duties may apply by country of origin.
Does origin affect duty?
Yes. General and Special rates apply by trade agreement and origin. Additional duties (Section 301, 232, IEEPA) are origin-specific. Use the tariff calculator or resolve API with an origin to see full duty.
How do I compute total duty?
Use our tariff calculator (with HTS and optional origin) or the API endpoint GET /api/v1/tariffs/resolve with hts and origin. The API returns base tariffs and additional measures separately; sum as needed for your use case.