💾 Data Updated: Latest version • Last updated: December 09, 2025

6806.20.00.00 - Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (including intermixtures thereof) 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty30%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This HTS classification, 6806.20.00.00, specifically addresses exfoliated vermiculite, expanded clays, foamed slag, and other similar expanded mineral materials. These materials are characterized by their lightweight and porous nature, typically achieved through processes that cause them to expand significantly when heated or otherwise treated. This expansion imparts desirable properties such as thermal insulation, sound absorption, and fire resistance. Examples include perlite expanded by heat, lightweight aggregates derived from expanded clay (such as "LECA"), and foamed slag produced during iron and steel manufacturing.

The distinction between this category and its sibling, 6806.10.00, is crucial. While 6806.10.00 covers slag wool, rock wool, and similar mineral wools, which are fibrous in structure and also used for insulation, this category focuses on expanded mineral materials that are granular or particulate in form due to their expansion process. Both aim for thermal and acoustic insulation but are derived and processed differently.

As this is a leaf node within the HTS, there are no further subcategories. Therefore, classification within 6806.20.00.00 is determined by the material itself being exfoliated vermiculite, expanded clay, foamed slag, or a similar product resulting from the expansion of minerals. Intermixtures of these expanded materials are also encompassed. The primary classification criterion is the expanded nature and mineral origin of the material, rather than its final form (e.g., bulk, sheets, or articles) unless otherwise specified in a broader heading.

Frequently Asked Questions

›What is HTS code 6806.20.00.00?
HTS code 6806.20.00.00 covers Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (including intermixtures thereof) under the US Harmonized Tariff Schedule. It falls under Chapter 68: Articles of stone, plaster, cement, asbestos, mica or similar materials.
›What products are classified under 6806.20.00.00?
This classification covers Exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials (including intermixtures thereof). It is a subcategory of 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: (6806).
›What is the import duty rate for 6806.20.00.00?
The general rate of duty for HTS 6806.20.00.00 is Free. The Column 2 rate is 30%.
›What unit of quantity is used for 6806.20.00.00?
Imports under HTS 6806.20.00.00 are measured in kg.

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