Slag — HTS 2620
Slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds
Chapter 26 › Heading 2620
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 2620 is a broad product category for slag, ash, and other residues that are not from the manufacture of iron or steel and that contain arsenic, metals, or metal compounds. These goods are often industrial byproducts, waste materials, or residues recovered from processes such as metalworking, combustion, refining, or chemical treatment. The heading does not automatically cover every ash or residue: the material’s origin, composition, and intended use must fit the heading, and the iron-or-steel-manufacturing exclusion is important.
The 4-digit heading is only the starting point. To reach the correct 8-digit HTSUS number, read the indented subheadings and select the branch that matches the residue’s material or chemical type—for example, the relevant metal or compound category, where applicable. Classification may depend on laboratory composition, the process that created the residue, whether it is waste or a recovered material, and any applicable chapter notes or exclusions. When those facts are uncertain, a customs broker or binding ruling request may be appropriate.
What to check
- Identify the process that produced the slag, ash, or residue and confirm that it was not produced from the manufacture of iron or steel.
- Obtain a reliable composition description or laboratory analysis showing which arsenic, metal, or metal compounds are present.
- Read every subheading under heading 2620 and match the goods to the most specific material or type description, rather than stopping at the 4-digit heading.
- Check the full HTSUS wording, chapter and section notes, exclusions, and any unit-of-measure requirements before selecting the 8-digit code.
- Keep product specifications, safety data, laboratory results, manufacturing records, and photographs supporting the classification; seek broker or customs advice if the material has multiple components or possible hazardous-waste implications.
HTS heading 2620 summary
Slag is a 4-digit product category containing 5 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 |
|---|---|
| 2620.19 | Other |
| 2620.60 | Containing arsenic, mercury, thallium or their mixtures, of a kind used for the extraction of arsenic or those metalsor for the manufacture of their chemical compounds |
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 |
|---|---|---|---|---|
| 2620.11.00.00 👉 | Hard zinc spelter | Free | — | 5% |
| 2620.21.00 👉 | Leaded gasoline sludges and leaded anti-knock compound sludges | Free | — | 8.8¢/kg on copper content + 3.3¢/kg on lead content + 3.7¢/kg on zinc content |
| 2620.29.00 👉 | Other | Free | — | 8.8¢/kg on copper content + 3.3¢/kg on lead content + 3.7¢/kg on zinc content |
| 2620.30.00 👉 | Containing mainly copper | Free | — | 8.8¢/kg on copper content + 3.3¢/kg on lead content + 3.7¢/kg on zinc content |
| 2620.40.00 👉 | Containing mainly aluminum | Free | — | Free |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2620?
Slag, ash and residues (other than from the manufacture of iron or steel), containing arsenic, metals or their compounds. 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.