Section XIII · Articles of stone, plaster, cement, asbestos, mica or similar materials

6815.91

Containing magnesite, magnesia in the form of periclase, dolomite including in the form of dolime, or chromite

How this code is built
68

Chapter

Articles of stone, plaster, cement, asbestos, mica or similar materials

15

Heading

The product family within the chapter

91

Subheading

The specific good, identical worldwide

The first six digits are the same in every country that uses the Harmonized System. The United States adds two more for the tariff rate and, often, two more for statistics — which is why the rates below are listed against 8- and 10-digit numbers rather than against this code.

How the schedule reaches this code

  1. 68Articles of stone, plaster, cement, asbestos, mica or similar materials
  2. 6815Articles of stone or of other mineral substances (including carbon fibers, articles of carbon fibers and articles of peat), not elsewhere specified or included:
  3. Other articles:
  4. Containing magnesite, magnesia in the form of periclase, dolomite including in the form of dolime, or chromite

Published US duty rates

Duty is set at the 8- or 10-digit line, not at this 6-digit subheading, so more than one rate can sit under this code.

  • 6815.91.00Containing magnesite, magnesia in the form of periclase, dolomite including in the form of dolime, or chromite
    General
    Free
    Special (FTA)
    —

    No preferential rate published.

    Column 2
    30%

    Countries without normal trade relations.

Schedule footnotes

  • See 9903.88.03.

A reference to Chapter 99 means an additional action — a Section 232 or 301 measure, an exclusion, or a quota — applies on top of the rate above.

This is the listed rate. Antidumping and countervailing duty orders, Chapter 99 actions and preference qualification all change what is actually collected, and classification is a judgement about your goods. Verify with your licensed customs broker before you file.

Other subheadings in heading 6815

Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21, published at hts.usitc.gov. A U.S. Government work in the public domain.