Carbides — HTS 2849
Carbides, whether or not chemically defined
Chapter 28 › Heading 2849
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 2849 is a broad product category for carbides, whether or not they are chemically defined. Carbides are compounds in which carbon is combined with another element, such as a metal or silicon. The heading can cover both chemically identified compounds and certain carbide materials or mixtures, depending on the product’s composition and form.
To reach the correct 8-digit HTSUS code, start with the product’s actual composition and determine whether it fits a more specific subheading under heading 2849. The lower-level provisions commonly distinguish products by the carbide or material involved, and may also consider whether the product is chemically defined, mixed, prepared, or presented in a particular form. The complete classification must be based on the tariff wording and the product facts, not just its trade name or intended use.
What to check
- Identify the carbide’s chemical composition, including the carbon-containing compound and any other substances present.
- Check whether the product is a single chemically defined compound, a mixture, or a prepared material; review the applicable HTSUS notes and subheading descriptions.
- Confirm the product’s physical form, such as powder, granules, pieces, or a finished article, because classification may change outside the compound category.
- Compare the product’s technical data sheet, safety data sheet, laboratory information, and supplier description with the exact 8-digit tariff wording.
- If the composition or presentation is unusual, ask a customs broker or request a binding classification decision from U.S. Customs and Border Protection.
HTS heading 2849 summary
Carbides is a 4-digit product category containing 1 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 2849.20 | Of silicon |
| 2849.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 2849.10.00.00 👉 | Of calcium | 1.8% | Free | 10% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2849?
Carbides, whether or not chemically defined. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.