HTS 2518Chapter 25· 2026_rev4

Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape:

General (MFN)

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Special / FTA

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Column 2

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Rate shown is General (Column 1) MFN from the 2026_rev4. Additional duties may apply including the 10% Section 122 global surcharge and Section 301 duties on Chinese-origin goods. Last reviewed: 2026_rev4.

Subcodes under 2518

2518.10.00.00Free

Dolomite, not calcined or sintered

2518.20.00.003%

Calcined or sintered dolomite

Related codes at this level

2501.00.00.00Free

Salt (including table salt and denatured salt) and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free-flowing agents; sea water

2502.00.00.00Free

Unroasted iron pyrites

2503.00.00Free

Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur

2504

Natural graphite:

2505

Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26:

2506

Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape:

Frequently asked

What HTS codes fall under 2518?

Heading 2518 covers Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape:. Subcodes further classify products by material, use, or form — see the subcodes list below.

What is the duty rate for 2518?

Duty rates are not set at the 4-digit heading level. Drill down to the 8 or 10-digit tariff line that matches your product.

Does the 10% Section 122 surcharge apply to 2518?

Yes — the Section 122 global surcharge applies in addition to the base MFN rate shown above. Use our Tariff Impact Calculator to see the total landed rate for your product.

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