Heat Insulating Ceramic Solid Building Brick
A solid ceramic building brick fired after shaping from inorganic nonmetallic materials like clays and lightweight aggregates, designed specifically for heat insulation in construction. It falls under HTS 6904.10.0010 as a solid building brick with thermal insulating properties, meeting Chapter 69 requirements for fired ceramic products not classifiable in headings 6901-6903. Thickness exceeds US note limits for tiles, confirming building brick classification.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made predominantly from refractory clays or high-alumina materials
Refractory bricks designed for lining furnaces/high-temp applications fall under heading 6902, not building bricks, regardless of insulation properties.
If thickness ≤3.2 cm and used as flooring/support tiles
US note excludes articles ≥3.2cm thick from 'tiles'; thinner heat insulating ceramic pieces classify as unglazed ceramic flags/tiles in 6907.
If agglomerated with mineral binders rather than purely ceramic fired body
Articles of Chapter 68 like agglomerated stones exclude Chapter 69 ceramic building bricks; material composition determines primary classification.
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Import Tips & Compliance
• 1
• Provide firing temperature certification (>800°C) to prove Chapter 69 eligibility and exclude unfired articles. 2
• Include thermal conductivity test results (e.g
• ASTM C518) to substantiate 'heat insulating' claim. 3
• Confirm solid construction (no internal voids >3.2cm thick) to avoid reclassification as tiles under 6904 other provisions
Related Products under HTS 6904.10.00.10
Vermiculite Ceramic Insulating Brick
Solid building brick incorporating expanded vermiculite aggregate in a fired clay matrix for superior thermal resistance, used in energy-efficient wall construction. Classified under HTS 6904.10.0010 as heat insulating solid bricks meeting fired ceramic criteria with low thermal conductivity (<0.2 W/mK). Exceeds tile thickness per US notes.
Perlite Aggregate Insulating Ceramic Brick
Fired solid brick containing expanded perlite for lightweight heat insulation, ideal for passive house construction and cavity walls. HTS 6904.10.0010 applies to these solid building bricks with ceramic fired body and thermal insulating properties per Chapter 69 definitions.
Foamglass Ceramic Insulating Brick
Solid brick made from cellular glass (foamglass) fired into durable heat insulating ceramic form for foundation walls and roof insulation. Falls under HTS 6904.10.0010 as solid building bricks meeting fired ceramic requirements with exceptional low thermal conductivity.
Diatomaceous Earth Ceramic Insulating Brick
Solid fired brick incorporating diatomaceous earth for high-temperature insulation in building envelopes. HTS 6904.10.0010 classification for heat insulating solid ceramic building bricks per fired ceramic definitions.