HTS Chapter 25
Salt; sulfur; earths and stone; plastering materials, lime and cement
Chapter 25 of the Harmonized Tariff Schedule of the United States has 20 four-digit headings. Choose one to see every tariff line with its general (MFN), special (free trade agreement) and Column 2 duty rate, then run a full estimate including Chapter 99 tariffs and fees.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
- 2504Natural graphiteGeneral: Free
- 2505Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26General: Free
- 2506Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shapeGeneral: Free
- 2508Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earthsGeneral: Free
- 2510Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalkGeneral: Free
- 2511Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816General: Free, $1.25/t
- 2513Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treatedGeneral: Free
- 2515Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shapeGeneral: Free, 3%
- 2516Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shapeGeneral: Free, 3%…
- 2517Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast; shingle and flint, whether or not heat-treated; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treatedGeneral: Free
- 2518Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shapeGeneral: Free, 3%
- 2519Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pureGeneral: Free
- 2520Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retardersGeneral: Free
- 2522Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825General: Free
- 2523Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkersGeneral: Free
- 2524AsbestosGeneral: Free
- 2525Mica, including splittings; mica wasteGeneral: Free
- 2526Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talcGeneral: Free
- 2529Feldspar; leucite, nepheline and nepheline syenite; fluorsparGeneral: Free
- 2530Mineral substances not elsewhere specified or includedGeneral: Free, 2.9%