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

6903.10.00.00 - Containing by weight more than 50 percent of free carbon 🖩

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 Duty45%
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 category, 6903.10.00.00, specifically covers "other refractory ceramic goods" that are characterized by containing more than 50 percent by weight of free carbon. These goods are designed to withstand high temperatures and chemical attack, making them suitable for industrial applications such as furnace linings, crucibles for melting metals, and components in chemical processing equipment where carbon's unique refractory properties are essential.

This classification is distinguished from its siblings by its primary constituent material. While 6903.20.00.00 focuses on refractory ceramics with high alumina content, and 6903.90.00 encompasses all other miscellaneous refractory ceramic products not otherwise specified, 6903.10.00.00 is exclusively for those where free carbon is the dominant component, dictating their specific thermal and chemical resistance characteristics.

As this is a leaf node within the HTS structure, there are no further subcategories under 6903.10.00.00. Therefore, the classification of goods within this heading relies entirely on the precise determination of whether they are refractory ceramic articles and if they meet the stipulated threshold of containing more than 50 percent by weight of free carbon.

Frequently Asked Questions

›What is HTS code 6903.10.00.00?
HTS code 6903.10.00.00 covers Containing by weight more than 50 percent of free carbon under the US Harmonized Tariff Schedule. It falls under Chapter 69: Ceramic products.
›What products are classified under 6903.10.00.00?
This classification covers Containing by weight more than 50 percent of free carbon. It is a subcategory of Other refractory ceramic goods (for example, retorts, crucibles, muffles, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods and slide gates), other than those of siliceous fossil meals or of similar siliceous earths: (6903).
›What is the import duty rate for 6903.10.00.00?
The general rate of duty for HTS 6903.10.00.00 is Free. The Column 2 rate is 45%.
›What unit of quantity is used for 6903.10.00.00?
Imports under HTS 6903.10.00.00 are measured in kg.

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