Aluminous Cement Clinker from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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