Aluminous Cement Clinker from China
Aluminous cement clinker, also known as high-alumina clinker, is produced from bauxite and limestone, offering rapid hardening and heat resistance. Classified under HTS 2523.10.00.00 as a hydraulic cement clinker before grinding. Used in refractory applications and high-temperature concretes.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include bauxite content certification (>30% Al2O3) to distinguish from Portland clinker and support hydraulic cement classification
• Declare intended end-use in refractory mixes if applicable, but note clinkers remain under 2523 regardless of use