Magnesia-Chrome Refractory Bricks
Magnesia-Chrome Refractory Bricks are high-density refractory bricks composed of more than 50% by weight of magnesia (MgO) and chromic oxide (Cr2O3), fired after shaping to withstand extreme temperatures in industrial furnaces. These bricks are used in rotary kilns and non-ferrous metal smelters where basic slag resistance is critical. They are classified under 6902.10.00 as refractory ceramic constructional goods with the specified chemical composition.
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 |
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- HC
Consumer Products Safety · May be required
May require HC Consumer Products Safety depending on intended use (HC21) and Canadian product category (HC29, HC30, HC31, HC32, HC33, HC34, HC35, HC36, HC37); or intended use (HC22, HC23, HC24, HC26, HC27) and Canadian product category (HC37). Matching criteria: Starts With 69021000; Starts With 69021000; Equal To 6902100010; Equal To 6902100090; Equal To 6902100010; Equal To 6902100090. Logic: MATCH IF (Valid HS Code) AND (Intended Use Code) AND (Valid Canadian Product Category).
CBSA Single Window matching criteria, unknown
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 combined MgO and Cr2O3 content is 50% or less
This heading covers refractory bricks with different chemical compositions, such as alumina-silica based bricks.
If the product contains more than 50% of alumina (Al2O3) or a mixture of alumina and silica
Refractory articles containing alumina as the dominant component fall under this heading.
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
• Provide a certificate of analysis showing the combined MgO and Cr2O3 content exceeds 50% to avoid misclassification
• Note that chromium compounds may be subject to environmental regulations; check with Environment and Climate Change Canada for any restrictions
• Ensure the bricks are fired after shaping, as per Chapter 69 legal notes
Related Products under Tariff item 6902.10.00
Calcium Aluminate Refractory Anchor Tiles
Specialty anchor tiles with high CaO content for securing fiber modules in furnace linings, containing over 50% CaO. Designed for easy installation in high-temperature applications.
Calcium Ferrite Refractory Bricks
Refractory bricks incorporating calcium ferrite phases with over 50% CaO equivalent for waste incinerator linings. These bricks resist alkali corrosion from flue gases.
Chrome-Magnesite Checker Bricks
Perforated checker bricks with over 50% Cr2O3 and MgO for regenerative heat recovery in glass and metallurgical furnaces. The lattice structure maximizes heat exchange efficiency.
Chromite-Magnesite Refractory Tiles
Fired ceramic tiles containing over 50% combined MgO and Cr2O3, designed for lining glass tank furnaces and copper smelters. These tiles offer excellent slag resistance and are thinner than blocks for curved surfaces.
Chromium-Corundum Refractory Bricks
High-chrome corundum bricks with Cr2O3 over 50% for glass furnace superstructures resisting batch carryover. The dense microstructure prevents glass penetration.
Direct-Bonded Magnesia Chrome Bricks
Premium refractory bricks produced by direct bonding of magnesia and chrome ore grains, with over 50% MgO/Cr2O3, for RH degasser vessels in steelmaking. These bricks offer exceptional creep resistance at high temperatures.