Carbon-Magnesia Converter Bricks
Carbon-magnesia converter bricks are refractory bricks containing over 70% magnesia and up to 29% carbon, bonded with pitch for use in basic oxygen furnace (BOF) converter mouths and trunnions. Their high magnesia content provides oxidation resistance and durability in extreme steelmaking conditions. They are classified under tariff item 6810.11.00 as building blocks and bricks of artificial stone.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3% | — | 3% |
| 🇲🇽Mexico | 3% | — | 3% |
| 🇺🇸United States | 3% | — | 3% |
| 🇩🇪Germany | 3% | — | 3% |
| 🇯🇵Japan | 3% | — | 3% |
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 bricks are shaped for furnace linings and contain over 50% magnesia
Heading 69.02 covers refractory bricks and similar refractory construction goods, which may apply to furnace-specific bricks.
If the bricks are not in building block form but are specialized refractory shapes
Heading 68.15 covers articles of stone or other mineral substances, including refractory items not elsewhere specified.
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
• Ensure the magnesia content exceeds 70% and carbon is below 30% to match the tariff item's scope
• Provide a certificate of analysis to the CBSA if requested
• Verify whether the bricks qualify as refractory articles under other headings, as this may affect classification
Related Products under Tariff item 6810.11.00
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Concrete Corner Blocks
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