Machines and appliances for testing the hardness — HTS 9024
Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof
Chapter 90 › Heading 9024
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 9024 is a broad product category for machines and appliances that test how materials behave when mechanical force is applied. This can include tests of hardness, tensile or compressive strength, elasticity, flexibility, and similar mechanical properties. The heading can cover testing equipment for materials such as metals, wood, textiles, paper, and plastics, as well as qualifying parts and accessories.
The 4-digit heading is only the starting point. To reach the correct 8-digit HTSUS subheading, identify the machine’s principal testing function and the material or product it is designed to test. The tariff structure may then distinguish among types of testing equipment, materials, or parts and accessories. Review the complete product description, relevant subheadings, and the applicable legal notes; unusual or multifunction equipment may require customs-broker or ruling guidance.
What to check
- Identify the exact mechanical property tested, such as hardness, tensile strength, compression, bending, or elasticity.
- Confirm the primary material or product tested—such as metal, wood, textile, paper, or plastic—and check whether the tariff text makes that distinction.
- Determine whether the item is a complete testing machine, a dedicated part, or an accessory; do not assume every replacement component belongs in the same provision.
- Read all 8-digit subheading descriptions and applicable section, chapter, and heading notes rather than stopping at heading 9024.
- Keep technical literature, operating specifications, and product photographs available to support the classification; seek broker or binding-ruling advice when the equipment has multiple functions.
HTS heading 9024 summary
Machines and appliances for testing the hardness is a 4-digit product category containing 3 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 |
|---|---|---|---|---|
| 9024.10.00.00 👉 | Machines and appliances for testing metals | Free | — | 40% |
| 9024.80.00.00 👉 | Other machines and appliances | Free | — | 40% |
| 9024.90.00 👉 | Parts and accessories | Free | — | 40% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 9024?
Machines and appliances for testing the hardness, strength, compressibility, elasticity or other mechanical properties of materials (for example, metals, wood, textiles, paper, plastics), and parts and accessories thereof. 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.