Silicon Carbide Refractory Bricks
Silicon carbide refractory bricks feature SiC grains bonded in a fired ceramic matrix, offering excellent thermal conductivity and abrasion resistance for blast furnace applications. They endure high wear in aggressive environments. Fits HTS 6902.90.10 for non-siliceous fossil meal refractory bricks.
Import Duty Rates by Country of Origin
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 in square or rectangular shapes for specific uses
Statistical suffixes differentiate shapes within 'other' refractory bricks.
If primarily carbide compounds without ceramic firing
Unfired carbides classify under Chapter 28 inorganic chemicals.
If used as industrial furnace lining components
Finished refractory goods for furnaces may shift to 6906 if not constructional bricks.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include technical datasheets proving SiC content and post-firing properties per ASTM standards
• Declare exact dimensions to distinguish from tiles (under 3.2 cm thick per US notes)
Related Products under HTS 6902.90.10
Magnesia Chrome Refractory Bricks
Magnesia chrome refractory bricks combine magnesium oxide and chromite for extreme resistance to basic slags in steelmaking furnaces. These fired ceramic bricks maintain structural integrity at temperatures up to 2000°C. HTS 6902.90.10 covers such 'other' refractory bricks excluding siliceous types.
Insulating Firebrick (IFB) 26 Grade
IFB 26 grade insulating firebricks feature low thermal conductivity due to high porosity, fired from clay-kaolin mixes for backup furnace insulation. Service limit around 1430°C makes them ideal for energy-efficient linings. HTS 6902.90.10 applies to these lightweight refractory bricks.
Chrome-Magnesite Refractory Bricks
Chrome-magnesite refractory bricks blend chrome ore with dead-burned magnesite, fired for superior resistance to ferrous slags in electric arc furnaces. They offer balanced properties for steel ladle linings. Covered by HTS 6902.90.10 for composite refractory bricks.
Andalusite Refractory Bricks
Andalusite refractory bricks incorporate mullite-forming andalusite for excellent thermal shock resistance in coke ovens and reheat furnaces. Fired ceramic structure ensures dimensional stability. HTS 6902.90.10 captures these non-siliceous specialty bricks.
90% Alumina Refractory Bricks
90% alumina refractory bricks deliver premium purity for critical zones in aluminum smelters and cement kilns, resisting molten metal and alkali corrosion. High fired density ensures longevity. Standard 'other' classification under HTS 6902.90.10.
Silimanite Refractory Bricks
Silimanite refractory bricks use high-alumina sillimanite minerals for creep-resistant performance in glass tank regenerator checkers. Their fired structure handles 1600°C+ with minimal deformation. HTS 6902.90.10 for these aluminosilicate bricks.