6902.10.10.00
Magnesite bricks
Classification path
- Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths
- Containing by weight, singly or together, more than 50 percent of the elements magnesium, calcium or chromium, expressed as MgO, CaO or Cr2O3
- Magnesite bricks
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 13%
- Unit of quantity
- thousands, t
Related lines in heading 6902
About heading 6902
Refractory bricks, blocks, tiles and similar refractory ceramic constructional goods, other than those of siliceous fossil meals or similar siliceous earths
Heading 6902 covers refractory ceramic constructional goods such as bricks, blocks, tiles and similar shapes that resist high heat, but not goods made of siliceous fossil meals or similar siliceous earths. It splits first by chemistry: goods with more than 50% magnesium, calcium or chromium oxides (6902.10), goods with more than 50% alumina, silica or a mix of them (6902.20), and everything else (6902.90). Each of those is then split by whether the article is a brick or another shape, and in the residual line by whether the material is clay or other.
Full guide to heading 6902Products in this heading
- Magnesite bricks for steel furnace linings
- High alumina kiln bricks for cement kilns
- Silica bricks for coke oven walls
- Fireclay refractory bricks for boiler and fireplace linings
- Chrome-magnesite refractory blocks for ladle linings
- Refractory shapes and tiles used to line kilns and incinerators
Frequently asked questions
What is the HTS code for magnesite refractory bricks?
Magnesite bricks containing more than 50% magnesium, calcium or chromium oxides are classified under 6902.10.10.00, with a general (MFN) rate of Free.
What is the duty on alumina refractory bricks?
Alumina bricks with more than 50% alumina fall under 6902.20.10.10, and the general (MFN) rate is Free. Other bricks in that subheading use 6902.20.10.20, also Free.
How do I classify fireclay refractory bricks?
Clay refractory bricks that do not meet the magnesium, calcium, chromium, alumina or silica thresholds are classified under 6902.90.10.10, at a general (MFN) rate of Free. Non-brick clay shapes in the same residual group go to 6902.90.50.10, also Free.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.