# HTS 2508: Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free

## Classification path

- **Section V:** [Mineral Products](https://plaintariff.com/section/v-mineral-products)
- **Chapter 25:** [Salt; sulphur; earths and stone; plastering materials, lime and cement](https://plaintariff.com/chapter/chapter-25-salt-sulphur-earths-and-stone-plastering-materials-lime-and)
- **HTS code:** 2508

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- [Tariff calculator](https://plaintariff.com/tools/tariff-calculator)
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- [Methodology & sources](https://plaintariff.com/methodology)

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/2508-other-clays-not-including-expanded-clays-of-heading-6806*