What is the duty rate for HTS 6806?

Q: What is the duty rate for HTS 6806?

The general duty rate for HTS 6806 is Free. This code covers: Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, other than those of heading 6811 or 6812, or of chapter 69:.

HTS 6806Chapter 68

HTS 6806 — Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, other than those of heading 6811 or 6812, or of chapter 69: Duty Rate & Import Guide

Articles of Stone, Plaster, Cement · 15 pending regulations · 15 court cases · $29.9M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$29.9M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

HIGH

0 rulings — · 15 reg · 9 CIT, 6 CAFC (15 recent)

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, US Census Bureau, Federal Register, CourtListener · As of 2026-04-28 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code

Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 15 pending Federal Register actions, and 15 CIT/CAFC cases.

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Subheadings (11)

Code	Description	Rate
6806.10.00	Slag wool, rock wool and similar mineral wools (including intermixtures thereof), in bulk, sheets or rolls	3.9%
6806.10.00.10	Accoustical pads and boards	—
6806.10.00.20	Batts, not exceeding <il>61 cm</il> in width	—
6806.10.00.40	Batts, exceeding <il>61 cm</il> in width	—
6806.10.00.60	Pipe coverings	—
6806.10.00.90	Other	—
6806.20.00.00	Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (including intermixtures thereof)	Free
6806.90.00	Other	Free
6806.90.00.10	Accoustical pads and boards	—
6806.90.00.20	Of molded calcium silicate	—
6806.90.00.90	Other	—

Federal Register (15)

Proposed Rule2026-04599

2026-03-09

Dairy Tariff-Rate Quota Import Licensing Program

Proposed rule.

Notice2025-11067

2025-06-16

Implementation of Duties on Steel Pursuant to Proclamation 10896 Adjusting Imports of Steel Into the United States

Notice.·Effective 2025-06-23

Notice2025-04210

2025-03-14

Certification of Systems for Processing and Collecting Tariffs on Steel and Aluminum Articles Pursuant to the President's February 10, 2025 Proclamations

Notice.

Notice2025-06478

2025-04-16

Notice of Invocation of Special Agricultural Safeguard Measures Pursuant to the Uruguay Round Agreements Act

Notification of invocation of special agricultural safeguard duty on imports of articles containing over 65 percent by dry weight of sugars described in additional U.S. note 2 to chapter 17.

Notice2025-03900

2025-03-11

Amendment to Notice of Implementation of Additional Duties on Products of Mexico Pursuant to the President's Executive Order 14194, Imposing Duties To Address the Situation at Our Southern Border

Notice.·Effective 2025-03-07

View all 15+ regulations on Federal Register →