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SITCSection 6
U.S. imports of aluminous cement (SITC 66123) totaled $2.9M in April 2026, traded with 13 countries.
Importers of Aluminous Cement paid $186K in duties in April 2026 — an effective duty rate of 7.2% on $2.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Aluminous Cement imports of $2.9M in April 2026 ran 37% below the year-to-date monthly average of $4.7M.
Last updated: April 2026 dataAluminous cement — also called calcium aluminate cement (CAC) or high-alumina cement — is a specialty hydraulic binder distinguished by its high alumina content, which delivers rapid strength gain, exceptional refractory performance, and resistance to chemical attack. These properties make it indispensable in refractory castables, sewer infrastructure, and industrial flooring exposed to acids or high temperatures, where ordinary Portland cement would fail. Because aluminous cement is a niche, technically specified product, importers typically work directly with specialty chemical distributors and must verify that the alumina content and setting characteristics match the end-use specification.
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Commercial grades of calcium aluminate cement typically range from approximately 40% to over 70% Al₂O₃ content. Lower-alumina grades (around 40%) are used in general construction and sewer applications, while high-purity grades (70%+) are specified for demanding refractory and high-temperature industrial applications. The alumina content should be confirmed by the supplier's Certificate of Analysis and matched to the end-use specification before import.
Antidumping orders on cement are typically scope-specific and may not extend to aluminous cement, which is a chemically distinct product from Portland cement. Importers should request a formal scope ruling from the Department of Commerce if there is any ambiguity about whether an active order covers their specific product, rather than assuming coverage or exclusion.
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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 |