High-Alumina Refractory Cement
High-alumina refractory cement is a hydraulic cement composed primarily of calcium aluminate, designed for high-temperature applications in furnaces and kilns. It falls under tariff item 2523.30.00 as aluminous cement, provided it is not a refractory mix excluded by Chapter 25 Note 2.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a dolomite ramming mix or similar refractory mix
Chapter 25 Note 2(e) excludes dolomite ramming mixes, which are classified under heading 38.16.
If imported as clinker for further grinding
Cement clinkers are classified separately under 2523.10.00.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Distinguish the product from refractory ramming mixes, which are excluded under Chapter 25 Note 2(e) and fall under heading 38.16
• Ensure the cement is not mixed with aggregates or additives that make it a specific-use product
• Provide technical data showing it is a hydraulic cement, not a pre-mixed refractory material
Related Products under Tariff item 2523.30.00
Aluminous Expansion Cement
Aluminous expansion cement is a hydraulic cement based on calcium aluminate that generates controlled expansion during setting, making it suitable for precision grouting and anchoring. It falls under tariff item 2523.30.00 as an aluminous cement, which is defined by its calcium aluminate composition and hydraulic properties.
Calcium Aluminate Cement Powder
Calcium aluminate cement powder is an aluminous cement used in rapid-hardening concrete and repair mortars, offering superior sulfate resistance and fast setting. It is classified under tariff item 2523.30.00 because its primary component is calcium aluminate, which defines aluminous cement.
Fondu Aluminous Cement
Fondu aluminous cement is a high-purity calcium aluminate cement used in specialty concretes and castables, known for quick setting properties. It qualifies under tariff item 2523.30.00 as an aluminous cement due to its calcium aluminate base.
Rapid-Set Aluminous Cement Clinker
Rapid-set aluminous cement clinker is an intermediate product ground into finished cement, containing high aluminates. It is classified under tariff item 2523.30.00 whether in clinker or powder form, as the heading covers aluminous hydraulic cements in both forms.
Sulfuric-Resistant Aluminous Cement
Sulfuric-resistant aluminous cement is formulated for aggressive environments like sewers and wastewater structures, with high alumina content providing excellent resistance. It qualifies under tariff item 2523.30.00 as a hydraulic aluminous cement, as its composition and properties align with the heading.