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HSChapter 25
U.S. imports of aluminous cement (high-alumina cement) (HS 252330) totaled $2.9M in April 2026, traded with 13 countries.
Last updated: April 2026 dataAluminous cement — also called high-alumina cement or calcium aluminate cement — is engineered for extreme-temperature and chemically aggressive environments, serving refractory castables, kiln linings, sewage infrastructure, and rapid-setting repair applications where Portland cement would fail. France is the leading US import source, reflecting the global dominance of French producers in this specialty segment, with Poland and Croatia also supplying the market. Classified under tariff line 2523300000, this product commands a significant price premium over Portland cement and is typically sold to industrial rather than general construction buyers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Aluminous cement is manufactured from bauxite and limestone rather than the iron-bearing raw materials used for Portland cement, resulting in a high alumina (Al₂O₃) content — typically above 35%. This composition gives it exceptional heat resistance and rapid strength gain. For classification, the key is confirming the alumina content and production route; a product that does not meet the aluminous cement composition threshold would fall under the hydraulic cements NESOI heading (2523900000) instead.
ASTM C1600 covers ultra-high-early-strength hydraulic cement, but most aluminous cement for refractory use is specified to EN 14647 (calcium aluminate cement) or proprietary producer standards. Importers supplying refractory or industrial end users should obtain technical data sheets confirming alumina class (CA-25, CA-40, CA-50, CA-70, CA-80) to match the application requirement.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $364K | $1.1M | +$765K |
| CROATIA | $799K | -- | -$799K |
| TURKEY | $726K | -- | -$726K |
| POLAND | $446K | -- | -$446K |
| NETHERLANDS | $417K | -- | -$417K |