Harmonized Tariff Schedule of the United States · HTS code · HS 2523.10
2523.10.00: Portland cement, aluminous cement, slag cement: cement clinkers
Cement clinker
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 2523 Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers:
- 2523.10.00 Cement clinkers
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
Additional duties and charges 1
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
- Applies to goods from
- China
- In force
- from 24 September 2018
- Legal act
- HTSUS 9903.88.03
Same subheading in other tariffs
2523.10 Portland cement, aluminous cement, slag cement: cement clinkers
UK Free Third-country duty 2 tariff lines 
EU 1.7% Third-country duty 1 tariff line 
Türkiye 1.7% Third-country duty 1 tariff line 
Canada Free Third-country duty 1 tariff line 
Mexico Free Third-country duty 1 tariff line 
Brazil 3.6% Third-country duty 1 tariff line 
Argentina 3.6% Third-country duty 1 tariff line 
Peru Free Third-country duty 1 tariff line 
New Zealand Free Third-country duty 2 tariff lines 
Japan 2.2% Third-country duty 1 tariff line 
Taiwan Free – 2.5% Third-country duty 2 tariff lines · average 1.3% 
GCC 5% Third-country duty 4 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia 10% Third-country duty 1 tariff line 
Nigeria 10% Third-country duty 1 tariff line Legal notes
In the Harmonized Tariff Schedule of the United States, 2523.10.00 is one of 1 line under subheading 2523.10, portland cement, aluminous cement, slag cement: cement clinkers.
The general duty is free, and quantities are declared in t.
For the same subheading, the UK duty is free, the EU duty is 1.7%, the Türkiye duty is 1.7%, the Canada duty is free, the Mexico duty is free, the Brazil duty is 3.6%, the Argentina duty is 3.6%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 2.2%, the Taiwan duty is 0%–2.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is 10% and the Nigeria duty is 10%.
The United States imported goods of subheading 2523.10 worth US$128m in 2024; the largest supplier was France.
Questions and answers
What is the USA import duty for HTS code 2523.10.00?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is t. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 2523.10 as a whole, the largest supplier in 2024 was France (US$46m), followed by Canada.
Typical products
Everyday names, not part of the legal text.