Refined copper and copper alloys — HTS 7403
Refined copper and copper alloys, unwrought (other than master alloys of heading 7405)
Chapter 74 › Heading 7403
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 7403 covers refined copper and copper alloys in unwrought form—basic metal stock that has not been made into products such as wire, sheet, tube, fittings, or finished articles. “Refined copper” generally means copper meeting the tariff’s specified purity description, while “copper alloys” are copper mixed with other metals. The heading excludes master alloys classified under heading 7405.
The 4-digit heading is only the starting category, not the final classification. To reach the correct 8-digit HTSUS subheading, follow the tariff’s subdivisions, which commonly distinguish refined copper from particular alloy types and then identify the form or material specification. Confirm the product’s composition, physical form, and any applicable tariff notes against the current HTSUS and official classification guidance.
What to check
- Confirm that the item is truly unwrought metal stock, rather than wire, plate, foil, tube, castings, or another worked product covered elsewhere.
- Obtain reliable composition information, such as the copper content and the identity and percentage of alloying elements; use a mill certificate or laboratory analysis when appropriate.
- Check whether the product qualifies as refined copper or is a copper alloy, and compare its exact material description with the 8-digit subheading text and relevant legal notes.
- Verify that it is not a master alloy of heading 7405 or another specifically excluded product.
- Use the current HTSUS, including Chapter 74 notes and the applicable statistical suffix; ask a customs broker or seek a formal ruling when the composition or classification is uncertain.
HTS heading 7403 summary
Refined copper and copper alloys is a 4-digit product category containing 7 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.
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 |
|---|---|---|---|---|
| 7403.11.00.00 👉 | Cathodes and sections of cathodes | 1% | Free | 6% |
| 7403.12.00.00 👉 | Wire bars | 1% | Free | 6% |
| 7403.13.00.00 👉 | Billets | 1% | Free | 6% |
| 7403.19.00.00 👉 | Other | 1% | Free | 6% |
| 7403.21.00.00 👉 | Copper-zinc base alloys (brass) | 1% | Free | 6% |
| 7403.22.00.00 👉 | Copper-tin base alloys (bronze) | 1% | Free | 6% |
| 7403.29.01 👉 | Other copper alloys | 1% | Free | 6% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 7403?
Refined copper and copper alloys, unwrought (other than master alloys of heading 7405). 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.